Low Outgassing Silicones: Materials, Standards, and Applications
ElastaPro makes low outgassing silicones that meet ASTM E595 requirements and are specially formulated and processed to minimize the release of volatile compounds under vacuum conditions and/or heat. In addition to spacecraft, applications include aerospace, defense, electronics, optics, and medical devices.
ElastaPro produces low outgassing silicones at our Made in USA manufacturing facility in Santa Fe Springs, California and offers these specification grade materials as solid silicone sheet and uncured silicone compound. Choose ASTM E595 silicone in following durometers (hardness) on the Shore A scale: 40, 50, 60, and 70.
Keep reading to learn more and contact us for a quote.
What is Outgassing?
Outgassing refers to the release of volatile organic compounds (VOCs) from a material, typically at reduced pressure (vacuum) or elevated temperatures. Volatiles include residual solvents from processing, unreacted monomers, plasticizers and additives, and degradation products from thermal or environmental stress. Sometimes, outgassing is called off-gassing instead.
In vacuum conditions such as space, the released vapors from outgassing can condense on sensitive surfaces such as optical lenses, sensors, or electronics. This can cause contamination, but it can also degrade performance or result in mission failure. Silicone elastomers are chemically stable and heat resistant, but they can contain low-molecular-weight siloxanes that are prone to volatilization.
What is ASTM E595?
ASTM E595 defines a standard test method for Total Mass Loss and Condensable Volatile Materials from outgassing in a vacuum environment. ASTM International developed this test standard in cooperation with NASA, and it simulates the conditions that materials such as silicones may face when used aboard spacecraft.
Importantly, ASTM E595 provides a consistent, repeatable way to measure how much mass a material loses in avacuum due to outgassing, and how much of that lost mass condenses on nearby surfaces. There are three key metrics.
- Total Mass Loss (TML) is the percentage of initial mass lost by the specimen during the test. This measurement is important, but TML alone does not indicate contamination risk. Some volatiles may not condense on cold surfaces but dissipate harmlessly.
- Collected Volatile Condensable Material (CVCM) is the percentage of material that condenses on a cooled collector plate. CVCM is critical measurement for optical and thermal systems since even a small amount of condensable material can fog lenses, degrade solar panels, or alter thermal emissivity.
- Water Vapor Recovered (WVR) is an optional measurement for materials, such as silicones, that absorb and release water vapor. WVR is less critical in space environments, but it’s important for applications (such as electronic assembly) that may occur in humid conditions.
ASTM E595 provides the framework for measuring these values, but NASA’s own standards define acceptable limits for spacecraft. For example, NASA-STD-6016 specifies that a material must meet the following criteria to be considered low outgassing.
- TML ≤ 1.0%
- CVCM ≤ 0.10%
This dual structure of ASTM providing the test method and NASA providing the acceptance criteria ensures consistency and practical usability across the aerospace sector.
Where are Low Outgassing Silicones Used?
Low outgassing is important for spaceflight and aerospace applications, but engineers also need low outgassing silicones for electronics and semiconductors, medical devices and pharmaceuticals, and optical and precision instruments.
Aerospace and Spaceflight
Outgassed volatiles can condense on telescope mirrors, star trackers, and camera lenses, reducing transmission and resolution. These substances can also condense on thermal control surfaces such as radiators or solar arrays and alter emissivity and absorptivity. In crewed spacecraft, outgassed volatiles may pose toxicity or odor concerns.
Electronics and Semiconductors
In microelectronics, outgassed siloxanes can deposit on contacts or printed circuit boards, leading to insulation failure or corrosion. The low outgassing silicones that ElastaPro provides are used for enclosure sealing, but the electronics industry also needs materials with low levels of outgassing for potting compounds, conformal coatings, and encapsulants.
Medical Devices and Pharmaceuticals
ASTM E595 does not apply to medical devices or pharmaceuticals; however, these industries are also concerned about the migration of volatile compounds that could interfere with sterile environments or analytical equipment. Low outgassing silicones can help improve biocompatibility and analytical purity, but other standards and requirements also apply.
Optical and Precision Instruments
Microscopes, laser systems, and satellites all require pristine optical surfaces. Even trace condensation can cause scattering or absorption, degrading performance. Silicones with low outgassing may be required for these applications.
Ask Elasto Proxy for Low Outgassing Silicones
ElastaPro makes ASTM E595 silicone and supplies these specification grade materials as solid silicone sheet and uncured silicone compound. Solid silicone sheets arrive ready for die cutting and come in thicknesses ranging from .010” to .500” and widths up to 60”. Uncured silicone compound can be molded, extruded, or calendered.
At ElastaPro, we manufacture materials in accordance with our ISO 9001:2015 and AS9100D Certified Quality Management system (QMS) and provide a Certificate of Analysis (COA) with each batch for traceability. Contact us to request a quote, discuss your applications, or receive additional information about how we serve your industry.
Aerospace Silicones from ElastaPro
ElastaPro makes aerospace silicones that meet customer callouts and military, civilian, and industry standards. These specification grade silicones are available as solid silicone sheet and uncured silicone compound. Solid silicone sheets arrive ready for die cutting and come in thicknesses ranging from .010” to .500” and widths up to 60”. Uncured silicone compound can be molded, extruded, or calendered.
ElastaPro manufactures aerospace silicones in accordance with our AS9100D and ISO 9001:2015 certified quality management system (QMS) at our Made in USA manufacturing facility in Santa Fe Springs, California. We are committed to meeting the highest quality standards and to supplying high-performance materials with the speed and value you deserve.
What are Aerospace Silicones?
Aerospace silicones are formulated to withstand the extreme conditions of aviation, aeronautics, and space. They differ from commercial grade and general purpose silicones in their enhanced properties such as high and low temperature resistance, durability, and low outgassing characteristics.
There are other silicone materials that can meet the rigors of extreme environments, but aerospace silicones also meet specifications from the U.S. military, civilian standards organizations, and/or original equipment manufacturers (OEMs). Some aerospace silicones are also military silicones, but not all military silicones are used in aerospace applications.
Types of Aerospace Silicones
ElastaPro makes aerospace silicones that meet the following specifications.
- A-A-55759
- A-A-59588
- AMS
- ASTM E595
- BMS
- DMS
- LMA
- MIL-DTL-25988
- MIL-PRF-81322
- MIL-SD-417
- PWA
- SAE
- WS14644
A-A-55759 Silicones
A-A-55759 silicones meet the requirements of alphanumeric classes within A-A-595750, a defense and aerospace specification from the U.S. General Services Administration (GSA) that is sometimes written as AA 59759, AA55759, or A A 55759. A-A-55759 has replaced ZZR765 (ZZ-R-75), which is still found on some part drawings.
ElastaPro makes the following types of A-A-55759 silicones.
- A-A-55759 1A
- A-A-55759 1B
- A-A-55759 3A
- A-A-55759 3B
A-A-59588 Silicones
A-A-59588 silicones meet the requirements of alphanumeric classes within A-A-59588, a defense and aerospace specification published by the U.S. General Services Administration (GSA) that is sometimes written as MIL SPEC AA-59588, AA 59588, AA59588, or A A 59588. This standard has replaced ZZR765 (ZZ-R-75), which is still found on some part drawings.
ElastaPro makes the following types of A-A-59588 silicones.
- A-A-59588 1A
- A-A-59588 1B
- A-A-59588 2A/2B
- A-A-59588 3A
- A-A-59588 3B
AMS Silicones
AMS silicones meet Aerospace Material Specifications (AMS) from SAE International. AMS standards are not military standards, but some military applications reference these civilian aerospace standards. In addition to material properties, AMS specifications cover manufacturing processes and testing procedures. They also include requirements for material selection and quality control.
ElastaPro makes the following types of AMS silicones.
- AMS3325
- AMS3326
- AMS3327
- AMS3332
- AMS3334
- AMS3335
- AMS3336
- AMS3337
- AMS 3338
- AMS3345
- AMS3348
- AMS3349
- AMS 3356
- AMS3357
- AMS3301
- AMS3302
- AMS3303
- AMS3304
- AMS3315
ASTM E595 Silicones
ASTM E595 silicones meet the low outgassing requirements in ASTM E595, which forms the basis of NASA’s low outgassing standard. These specification grade silicones have a total mass loss (TML) of ≤1.00% and a Collected Volatile Condensable Material (CVCM) of ≤0.10%. ElastaPro makes ASTM E595 silicones in 40, 50, 60, and 70 durometer (Shore A).
BMS Silicones
BMS silicones meet requirements in Boeing Material Specifications (BMS). The Boeing Company developed this set of standards to ensure that silicones and other materials meet specific performance and quality requirements for Boeing aircraft.
ElastaPro supplies BMS silicones that meet these specific standards.
- BMS 1-52
- BMS 1-53
- BMS 1-57
- BMS 1-62
- BMS 1-71
- BMS 1-72
- BMS 1-74
DMS Silicones
DMS silicones meet Douglas Material Specification (DMS) requirements, which are now managed by The Boeing Company. Douglas developed these requirements to achieve efficient and cost-effective aircraft production through integrated processes, supplier compliance, quality management, and supply chain management.
Contact ElastaPro for DMS silicones.
LMA Silicones
LMA silicones meet Lockheed Martin Aeronautics (LMA) requirements. Lockheed Martin Aeronautics is a division of Lockheed Martin Corporation that focuses on the design, development, production, and sustainment of military aircraft. LMA maintains detailed specifications that define the required properties, testing methods, and quality control procedures for each material used.
ElastaPro makes silicones that meet LMA-ME025 and LMA-STM requirements.
MIL-DTL-25988 Fluorosilicones (AMSR-25988)
MIL-DTL-25988 fluorosilicones meet the requirements of a U.S. military detail (DTL) specification for fluorosilicone (FVMQ) elastomers that resist fuel and oil and are used in aerospace applications. MIL-DTL-25988 classifies materials into types, classes and grades based on properties such as tensile strength, elongation, and hardness.
AMSR-25988, an SAE International specification, supercedes MIL-DTL-25988; however, MIL-DTL-25988 is still found on part drawings. AMSR-25988 and MIL-DTL-25988 both supercede the MILR-25988 standard, which is sometimes written as MIL-R-25988. Applications for MIL-DTL-25988 fluorosilicones include O-rings, molded parts, sheets, strips, and extruded shapes.
Contact ElastaPro for MIL-DTL-25988 fluorosilicones.
MIL-PRF-81322 Silicones
MIL-PRF-81322 silicones conform to a U.S. Department of Defense performance specification (PRF) for aircraft turbine engine lubricating oils. MIL-PRF-81322 does not focus specifically on silicone, but some lubricants contain silicone-based additives. Silicones contribute to a lubricant’s ability to withstand the high temperatures from turbine engines.
Contact ElastaPro for MIL-PRF-81322 silicones.
MIL-STD-417 Silicones
MIL-STD-417 silicones conform to a U.S. Department of Defense standard (STD) that defines a classification system and test standard for solid elastomeric materials (vulcanized rubber compounds). Material designations under this standard begin with the letter TA and are followed by a three-digit numeric identifier.
ElastaPro makes MIL-STD-417 silicones rangng from TA 405 to TA 810.
PWA Silicones
PWA silicones meet Pratt & Whitney requirements. Pratt Whitney, a division of RTX, designs and builds engines that are used aboard military and civilian aircraft. Compliant silicones must conform to AMS standards, military specifications, and other industry standards in addition to Pratt & Whitney’s internal requirements.
Contact ElastaPro for PWA silicones.
SAE Silicones
SAE silicones meet specific standards from SAE International. AMS silicones and AMSR-25988 silicones meet SAE standards, but there are other standards that affect silicones as well. For example, SAE-J20 covers silicone rubber that’s used in coolant hoses. TS147 covers silicone that used in loop-style clamp assemblies.
In addition to AMS and AMSR-25988 silicones, ElastaPro makes SAE-J20 and TS147 silicones.
WS14644 Silicones
WS14644 silicones are used in but not limited to aerospace applications. They meet the requirements of a U.S. Department of Navy specification that establishes requirements for vulcanized electrically conductive rubber compounds. WS14644 contains three types of materials and is sometimes listed on older part drawings.
ElastaPro makes Type III WS14644 silicones that are filled with carbon black and provide high conductivity.
Ask ElastaPro for Aerospace Silicones
ElastaPro makes specification grade aerospace silicones and supplies these materials as solid silicone sheet and uncured silicone compound. We provide a Certificate of Analysis (COA) with each batch for traceability. Contact us to request a quote, discuss your applications, or receive additional information about how we serve the aerospace industry.
How To Choose a Silicone Sheet Manufacturer
ElastaPro makes solid silicone sheet, including specification grade silicone.
As the demand for accurate and dependable products increases, so does the need for trustworthy manufacturers. Thus, the first step in ensuring the long-term success of your business is selecting the ideal silicone product manufacturer. However, choosing the right one might take significant work, as the market is crowded with suppliers who claim to be capable of providing your needs.
When looking for the best silicone manufacturer for your company, there are a few factors you should take into account before making a final choice. Here are the four most important considerations:
Choosing the Right Silicone Sheet Manufacturer
Here’s a list of things that you should look at when selecting a silicone manufacturer for your business:
Proximity
When selecting a manufacturer for silicone products, proximity is an important consideration. Technological advancements have made it possible to obtain products from around the world, so where you invest your money by sourcing your components is a key decision.
The US is one of the leading producers of silicone goods worldwide and sets the bar for inventive production techniques. Thus, your company may save money in the long run and get an advantage over competitors by using silicone manufactured in the country. These products are guaranteed best quality, and you can leverage better turnaround times and cutting-edge innovation.
Remember that you are establishing a long-term collaboration rather than just looking for a passable manufacturer. Therefore, your main goal should be to select a manufacturer who can supply you with cost-effective and efficient parts.
Track Record
Choosing a silicone manufacturer with a history of success and a solid reputation is always best. Inquire about the types of projects undertaken by potential manufacturers and determine how your project might fit within their experience. Finding a manufacturer specializing in your industry might help you avoid potentially costly errors.
You can also test the performance of the manufacturer’s supplied products. Some producers could charge you a small fee for procuring a sample. Still, it would pay to invest in confirming their products’ caliber; if the quality isn’t up to your requirements, it will save you from larger losses.
Expertise
When looking for the top silicone goods manufacturer, look for skilled employees and management. All employees in the manufacturing company — including designers, quality controllers, engineers, salespeople, and customer service representatives — should be well-qualified and exhibit professional conduct. An experienced team will aid in producing high-quality items that will benefit your company.
Good Communication
A collaborative and respectful attitude with a strong customer service team is crucial in your silicone manufacturing partner. The provider should take the time to understand your business and needs during the design process or after the product has been manufactured. Choosing a manufacturer in the same time zone can also help facilitate communication, especially when dealing with urgent requirements.
ElastaPro Silicone Sheeting: The Right Silicone Sheet Manufacturer for You!
Are you looking for the perfect partner that can provide you with the best solution for your silicone needs? Then, ElastaPro is the ideal choice for you!
At ElastaPro Silicone Sheeting, we offer clients worldwide a wide range of silicone products and components. Our significant field expertise and years of accumulated knowledge have enabled us to provide great outcomes to our client partners with various industrial needs.
Contact us today to learn more about our innovative silicone solutions.
Solid Silicone Product Considerations
Silicone is primarily made from silica, which contains various chemical components such as carbon, hydrogen, oxygen, and silicon. Solid silicone is a pliable elastomer or rubber ideal for a multitude of applications in the medical, aerospace, automotive, electronics, and food processing industries.
ElastaPro Silicone Sheeting offers a broad spectrum of solid silicone sheeting that our clients can use for a variety of purposes. These solid silicone products are extremely versatile, flame-retardant, durable, heat-resistant, high-performing, and have low chemical reactivity, making them perfect for your solid silicone needs. Our products can be supplied in either cured sheet or uncured sheet (which is used by fabricators to make their own part constructions). There is no elastomer better in maintaining its physical properties across a broad temperature spectrum, than silicone.
ElastaPro’s Solid Silicone Sheeting
At ElastaPro, we provide the finest silicone products by combining the advantages of high-quality silicone rubber with superior service and technology. Our products can be availed in various grades, sizes, colors, and durometers and are proudly made in the USA.
Commercial Grade Solid Silicone Sheet
Ideal for extreme temperature applications, ElastaPro’s commercial-grade solid silicone sheet provides outstanding gasket and sealing solutions for different industries. This product comes in .010″ to .500″ in thickness and up to 60″ in width. It is available in 20-90 durometer, and colors are customizable.
General Purpose Grade Solid Silicone Sheet
Our general-purpose solid silicone sheet has a thickness range of .010″ to .500″ and a width of up to 60″ wide, and meets various key industry specifications. These solid silicone products are designed for general applications and offer extreme temperature resistance and a good compression set. General-purpose grade silicone sheets are available in 25-90 durometer and come in many colors.
FDA Grade (White) Solid Silicone Sheet
This solid silicone product variation is FDA-approved and meets the CFR 177.2600 and European Union requirements, making it ideal for applications involving repetitive food contact. White FDA-grade silicone sheets from ElastraPro have superior gasket and sealing properties, 30-85 in durometer, and have similar thickness and width as other ElastaPro solid silicone products.
FDA Grade (Translucent) Solid Silicone Sheet
Like white FDA-grade silicone, ElastaPro’s translucent solid silicone sheet follows FDA,CFR 177.2600 and European Union requirements to pass industry standards for food processing applications. Although not clear in appearance, it allows light to pass through its rubber component. This product is perfect as a silicone rubber gasket for applications demanding food-grade materials.
Electronically Conductive Solid Silicone Sheet
Typically used in electrical cabinets, PC boards, and RMI/EFI gaskets, this product is a low-amperage semi-conductive silicone ideal for electrical applications. Our electronically conductive solid silicone sheet comes in .020″ to .375″ thickness, and its only color availability is black.
Fiberglass Reinforced Solid Silicone Sheet
The fiberglass-reinforced solid silicone sheet is widely used in aerospace, automotive, and other industries with demanding specifications due to its exceptional weatherability, resistance to various lubricating oils, and can maintain its physical properties over a wide temperature range. This solid silicone sheet comes in two types — specification and commercial-grade fiberglass reinforced.
Fluorosilicone Solid Sheet
With a wide array of available thicknesses and widths, ElastaPro’s fluorosilicone solid sheet is the perfect silicone product for the aerospace, military, and automotive industries. This silicone variation can weather and dilute numerous chemicals, including acids and alkalines, petroleum oils, hydrocarbon fuels, diester, and silicone oils.
Health Care (USP Class VI & ISO 10993) Solid Silicone Sheet
This solid silicone product is specially designed for medical devices and applications that last less than 29 days in the human body and demand additional certification. Our healthcare solid silicone sheets are made-to-order with a range of .010″ to .500″ in thickness and up to 60″ wide.
High Strength Grade Solid Silicone Sheet
High-strength grade silicone sheet is designed for applications that need more robust physical properties. It has FDA CFR 177.2600 certification that guarantees the product can meet high-strength specifications required by various industries.
Medium Strength Grade Solid Silicone Sheet
Available in 25-85 durometers, medium-strength solid silicone sheets are the perfect choice for applications needing higher physical properties than general-grade silicones. This product has a 60″ width and a thickness range of .010″ to .500″.
Extreme Flame Retardant Solid Silicone Sheet
Our Extreme Flame Retardant Grade Silicone Sheeting is designed for applications needing High Flame Resistance, and a UL 94V0 Yellow Card listed material. It is easily die-cut and provides a superior gasket and sealing solution. Thicknesses from .010” to .500” thick. Widths up to 60” wide. Due to the unique chemistries of this material, the product is black in color.
Extreme High-Temperature Solid Silicone Sheet
This product uses the latest Heat Stabilizer Technology to generate higher temperature endurance than standard and general purpose silicone sheets. Extreme high temperature solid silicone sheet is available in a broad spectrum of colors with a .010″ to .500″ thickness range.
Extreme Low-Temperature Solid Silicone Sheet
Contrary to extreme high-temperature silicones, this solid silicone variety is applicable for industries with extremely low temperatures, like aerospace, defense, and cryogenics. This is a made-to-order material and comes in many available colors.
High Strength / Extreme Low Temperature
ElastaPro’s high strength / extreme low temperature is a silicone sheet designed for aerospace, defense, and cryogenics industries that demand high tensile strength and endurance to extremely low temperatures.
Metal Detectable Silicone Sheet
For industry applications that require additional safety — like food, beverage, dairy, pharmaceutical, and others — our metal-detectable silicone sheet is the best silicone choice as it boosts safety and lowers downtime by quickly sequestering seal fragments in-process. This product is available in opaque colors.
Need Solid Silicone Supplies?
ElastaPro Silicone Sheeting provides a vast array of silicone specifications to our clients worldwide. Our extensive field experience and years of acquired knowledge allowed us to deliver outstanding results to our customer partners with varying industrial requirements.
Whatever your silicone needs are, ElastaPro can help! Contact us today to learn more about our innovative silicone solutions.
Key Considerations in FDA Silicone Materials
Safety should always be the highest priority for food manufacturers. A single error in handling and packaging could result in a negative brand image and the consumers losing their trust in the brand. Over the years, different materials — like glass, metal, wood, plastic, rubber, and silicone — have been used to seal, store, hold, pack, and transport food items domestically and internationally. However, a particular material stands out above the rest.
FDA-approved silicone materials are widely used around the globe due to the numerous benefits they offer to their users. In addition, companies and food manufacturers often choose this type of silicone for their business operations because of its versatility and high-performing features.
FDA silicone materials are multifaceted and robust synthetic polymers. These products have low volatility, and no odor or taste, making them ideal for direct and repetitive food contact. Still, manufacturers must adhere to specific FDA standards for safety and handling to achieve the FDA food-grade label.
This article discusses why manufacturers should consider switching to FDA silicone materials for food packaging and sealing needs.
Benefits of FDA Silicone Materials
FDA-grade silicone materials are durable and adaptable, enabling manufacturers to utilize them in multiple applications. One of its best qualities is resistance to external elements like extreme heat and stressful environments. Because of this, it is widely used in producing gaskets and seals for food packaging. Below are the many other advantages of using FDA-approved silicone products.
Resistance to Extreme Temperature
Silicone is known for its heat endurance qualities. It can withstand extreme hot and cold temperatures, ranging from -80 °F to 550 °F, without yielding its durability and shape. Silicone developed its low thermal conductivity due to its highly stable chemical structure.
Resistance to Liquid and Chemicals
Silicone is not only heat resistant but also watertight. It also can resist food oils and most chemical types. Thus, food containers sealed using FDA silicone materials prevent leakage and food contamination.
Resistance to Environmental and External Elements
Because of their durability, FDA silicone materials can repel environmental and external elements like aging, ozonation, and weathering. This specific silicone feature helps foods sealed in silicone gaskets prolong their shelf life.
Free of Harmful Fillers
Some food containers and sealers contain toxic organic compounds like Bisphenol S and A (BPS, BPA) that could lead to increased blood pressure, cardiovascular diseases, type 2 diabetes, and other hormonal and obesogenic effects. Fortunately, silicones are non-toxic materials safe for food sealing and packing purposes.
Prevents Unwanted Physical Changes
Due to its food-grade status, silicone materials are less vulnerable to discoloration, deformation, odor, and other unwanted changes that could result in food contamination, making them unsuitable for consumption. Subsequently, they have antifungal and nonstick properties that help prevent mold or fungal decay.
Flexibility
Silicone’s flexible nature allows manufacturers to transform and mold it into custom sealing profiles, extending its usability to a broader spectrum of food applications.
FDA Silicone Food Applications
FDA-grade silicone materials have extensive functions and can be applied to several food-related purposes:
- Gaskets for food processing machinery
- Food transfer tubing
- Dairy tubing and fluid handling
- Vending tubing
- Brewery tubing and seals
- Antimicrobial belting
- Commercial oven seals
- Coffee machine tubing
- Food-grade beverage gaskets
- O-rings
- Vibration pads
- Electrical insulators
Get Exceptional FDA Silicone Materials From ElastaPro
Food safety doesn’t stop with food processing. Manufacturers should also consider using food-grade materials to keep their products fresh and free from harmful substances.
ElastaPro offers durable FDA-approved silicone sheeting ideal for making trustworthy silicone rubber gaskets and seals for safe and secured food packaging. Our products come in two varieties — FDA Grade (Translucent) Silicone Solid Sheet and GDA Grade (Pigmented) Silicone Sheet — and are compliant with CFR 177.2600, a section of the U.S. Code of Federal Regulations (CFR) with components for rubber articles intended for replicated use in contact with food.
Do you need a reliable FDA silicone materials supplier for your business? Partner with us today! ElastaPro has been around in the industry for decades, making us one of the silicone sheeting, compounding, and technology experts.
Contact us and get your high-quality FDA silicone from us!
Where To Find High Temperature Silicone
Since silicone can endure up to approximately 300 °F, this material is the preferred rubber for applications requiring tolerance to extreme temperatures. Although commercial silicones are generally heat-resistant, there are silicone products that are specifically formulated to resist temperatures of 500-572 °F without sustaining deformation or other damages.
Silicone’s highly stable chemical structure makes it thermal resistant while offering a kaleidoscope of advantageous properties, including high flexibility, water resistance, electrical insulation properties, and compounds to resist mold and fungus growth. In this article, we will go over the different types of silicone rubber and the industries and applications where they are commonly used.
Types of Silicone Rubber
Silicone rubber’s flexibility is thanks to groups of organic molecules formed on a base of silicon and oxygen. It is available in various forms, each with distinctive attributes suitable for a range of applications.
Methyl Groups (MQ)
This group is known as dimethyl silicone rubber or methyl silicone rubber. Methyl groups can be substituted with other groups — including ethyl, phenyl, and vinyl — to enhance and modify their mechanical, chemical, and thermodynamic properties for different applications.
Methyl and Vinyl Groups (VMQ)
This group, known as methyl vinyl silicone rubber, is the most commonly used type. It features good compressive strength, which helps with the vulcanization industry. This type also has excellent low-temperature flexibility, high heat, and oxidative stability and is resistant to chemicals, corrosion, ozone, and sunlight.
Methyl and Phenyl Groups (PMQ)
This silicone rubber group, known as methyl-phenyl silicone rubber or phenyl silicone rubber, has an excellent low-temperature performance. The presence of phenyl enhances different properties, including high corrosion resistance, thermal stability, shear resistance, and optical conciseness. This group is used for connectors in the cable industry and sealing for automotive and aerospace applications.
Methyl, Phenyl, and Vinyl Groups (PVMQ)
The methyl groups in this compound are substituted with phenyl groups, which effectively enhances the material’s low operating temperatures. As a result, they are particularly suited to hygienic applications in the food and pharmaceutical industries.
Fluoro, Vinyl, and Methyl Groups (FVMQ)
This group is also known as fluorinated rubber or fluorosilicone rubber. They are highly chemically resistant to fuel, oil, and solvent substances. They are also typically used in sealing applications in the aerospace industry that require resistance to hot fuels, oils, and diester-based lubricants.
Uses and Applications of High Temperature Silicone Rubber
Because high temperature silicone rubber is so robust and offers the best performance of any elastomer across the extreme temperatures, , it is used in many critical applications.. Here are some of its uses and applications:
Hot Stamping
Silicone rubber sheets are extensively used in consumer product decoration, particularly hot stamps, heat seals, or heat transfer. For example, sheets are used in hot stamp decoration for full coverage and tipping applications. An example of tipping is when the foil is used to raise lettering on credit cards. Meanwhile, standard silicone sheets enable contact for applying the full image on a heat transfer mark to a part in heat transfer decoration.
Electronic Equipment
Silicone rubber is used to manufacture electrical insulating tapes, adhesives, sealants, circuit board surface coatings, varnishes, lubricants, optical fiber coatings, and other silicon-grade and silicon-source chemicals. It is also used in making keyboards, telephones, hard-coating computer housings, and other electronic equipment.
Automotive Industry
Silicone rubber sheets — resistant to heat, oil, and fuel — are molded into various durable parts for the automotive industry. These include sealants and adhesives, specialty lubricants, vibration components, and automotive polishes.
Aerospace Equipment
Silicone rubber is applied in many aspects of aircraft assembly and maintenance. Mainly, it is used in manufacturing ablatives, window seals, boots, hoses, seals and gaskets, and adhesives.
Construction Industry
Silicone rubber is used in many applications in constrcution from sealing, to protecting. Due to silicone’s excellent ability to resit the elements its the premier material for construstion sealing.
Choose ElastaPro for Your Silicone Needs!
ElastaPro was founded by industry veterans with decades of knowledge and expertise in silicone sheeting, compounding, and technology. We are fueled by our desire and deep expertise in effectively utilizing exceptional and proprietary manufacturing techniques to meet our customers’ requirements.
Contact us today to learn more about our silicone products and services!
High-Temperature Solid Silicone Sheeting
July 2022 was the third-hottest July on record in the U.S., according to the National Oceanic and Atmospheric Administration (NOAA). Here in Southern California where ElastaPro is located, inland regions have seen temperatures exceed 100°F this August.
Maybe it doesn’t get that hot in your backyard, but there are plenty of places indoors that do – and handling the heat isn’t just a summertime challenge. For example, the gaskets and seals on engines, pumps, compressors, and appliances all need high-temperature resistance.
Standard silicone elastomers are a great choice for temperatures up to 500°F, but what if you need solid sheeting for extreme heat? From automobiles to aerospace and aviation, there are plenty of applications for higher-temperature materials.
Extreme high-temperature grade silicone sheeting from ElastaPro uses high-quality heat stabilizers, including our own ESSHTA technology, which is rated up to 600°F/300°C. These Made in USA materials are great for die cutting and are available in:
- 55 or 60 durometer
- thicknesses from 0.10″ to .500″
- widths up to 60″
- various color and catalyst options
Download the datasheet to learn more, or contact us with questions.
Enjoy the rest of your summer – and stay cool in the heat.
Our Most Valuable Material Isn’t a Precious Metal
Gold, silver, platinum, and palladium. From jewelry to electronics, these precious metals are rare and have great economic value. Silicon metal isn’t precious, and its ingredients are commonly found in Earth’s crust. Yet, silicon metal is incredibly valuable because it’s a major ingredient in silicone rubber, solar panels, electric vehicles, semiconductor chips, aluminum, defense technologies – and much more.
Today, China refines 70% of the world’s silicon metal. The United States refines only 5%. Although the U.S. government is recognizing the importance of increasing our refining capacity, it takes years to build silicon metal refineries – and the refining process requires a great deal of energy. Meanwhile, demand for silicon metal is expected to grow 50% over the next 5 to 10 years.
Do we want to depend on China for our supply of silicon metal? For that matter, do we want to depend on overseas suppliers for PDMS, an important member of the silicone family? Most PDMS production has left North America for Asia, but demand for silicone keeps growing. That’s why members of the silicone industry, myself included, are asking the U.S. government to take bold action.
What can you do as a silicone buyer? Whenever possible, please choose products and materials that are Made in USA. Your buying decisions will help spur investments in domestic capacity, and you’ll get quality silicones with ingredients you can trust.
Healthcare Grade Solid Silicone Sheeting
Does your stock room feel more like an emergency room these days? Everywhere you look, the materials you need seem to be in short supply.
That’s why ElastaPro wants you to know we make healthcare-grade silicones that meet the following specifications.
- USP Class VI
- European Pharmacopeia
- ISO 10993
- FDA Title 21 CFR 177.2600.
Here are the vital signs for our healthcare-grade elastomers.
- Easily die-cut into gaskets for a superior sealing solution
- Available in 30, 40, 50, 60, and 70 durometers (Shore A)
- Thicknesses from .010″ to .500″ and Widths up to 60″
- Acceptable for implant <29 days
- No smell, no odor, no organic plasticizers
- Phthalate and peroxide free
- Safe for steam and gamma sterilization.
Plus, we only use domestically produced silicone for our healthcare-grade materials.
Would you like to learn more about what we can provide? Contact us.
Buy Silicones from ElastaPro: Short Lead Times, Low MOQs & Flexibility
Have you tried to buy silicones lately? These days it seems like everything is in short supply, including good news.
Some of what you need to buy isn’t available, and what you can get takes too long to arrive or ties up too much cash because of high minimum order quantities (MOQs). Meanwhile, the requirements you’re expected to meet keep getting stricter.
Fortunately, doing business with ElastaPro is about flexibility when you need to buy silicones. For stocked items, our lead times are typically as short as one to three days. For most made-to-order products, our lead times are two weeks. Plus, ElastaPro offers very low MOQs for all of our products.
Whether you need solid silicone sheets, uncured silicone compounds, or specifications-grade silicones, you’ll get high-quality materials backed by exceptional service and superior technology. The materials you need are proudly Made in the USA, too.
Buy Silicones from ElastaPro
At a time when supply chains are constricted, many suppliers seem rigid. That’s not the case with ElastaPro. Find out how how our flexibility can help you.
