Fluorosilicone (FVMQ) Sheet, Rolls & Uncured Compound
Fuel‑ and solvent‑resistant elastomers for aerospace and defense, industrial and chemical processing, and other demanding applications.
ElastaPro manufactures fluorosilicone (FVMQ) materials that resist fuels, oils, solvents, hydraulic fluids, and aggressive chemicals. Fluorosilicone rubber offers stable performance from –75°F to +450°F, exceptional compression set resistance, and long‑term durability.
All of ElastaPro’s fluorosilicones are Made in America and produced in accordance with our ISO 9001:2015 / AS9100D quality management system (QMS). We provide a full Certificate of Analysis (COA), lot traceability, and physical property verification with each batch.
Solid fluorosilicone rubber sheet from ElastaPro meets AMS-R-25988 and AMS3325 requirements. We also offer spec-grade fluorosilicone sheeting that meets AMS3326, AMS3327, and MIL-DTL-25988 standards. Fluorosilicone rolls and fluorosilicone compound from ElastaPro can meet these same specifications.
What is Fluorosilicone Rubber?
Fluorosilicone rubber combines the flexibility of silicone with fluorinated chemistry to deliver exceptional resistance to fuels, oils, and solvents. It maintains stable mechanical properties across a wide temperature range, performing reliably in environments where standard silicone would swell or degrade. FVMQ (Fluoro Vinyl Methyl Siloxane) is the ASTM designation for fluorosilicone.
Fluorosilicone vs. Silicone Rubber
- Fluorosilicone is more expensive than silicone rubber but provides greater resistance to fuels, oils, solvents, and aggressive chemicals.
- Silicone offers broader temperature resistance, costs less, and is used in high-temperature applications that do not involve exposure to aggressive chemicals.
- The table below provides typical values for each elastomers.
| Property | Fluorosilicone (FVMQ) | Standard Silicone (VMQ) |
| Fuel resistance | Excellent | Poor |
| Solvent resistance | Excellent | Poor |
| Temperature range | –75°F to +450°F | –80°F to +500°F |
| Cost | Higher | Lower |
| Use cases | Fuels, oils, chemicals | High-temp sealing |
Fluorosilicone vs. Viton
- Fluorosilicone provides significantly better low‑temperature flexibility and superior weathering resistance than Viton.
- Viton withstands higher temperatures and provides greater mechanical strength for hot, high‑pressure sealing environments.
- The table below provides typical values for each elastomer.
| Property | Fluorosilicone (FVMQ) | Viton (FKM) |
| Low‑temperature flexibility | Excellent | Fair |
| Fuel resistance | Excellent | Excellent |
| High‑temperature limit | 450°F | 500°F |
| Weather/ozone resistance | Excellent | Good |
| Compression set | Better | Good |
Fluorosilicone Strengths and Weaknesses
Like all elastomers, fluorosilicone rubber has its strengths (advantages) and weaknesses (disadvantages). Consider them during material selection, especially when comparing fluorosilicone rubber to silicone or Viton.
Advantages
- Strong chemical resistance: Unlike silicone, fluorosilicone won’t swell, degrade, or soften from hydrocarbon-based fuels, petroleum oils, mineral oils, and common solvents.
- Wide operating range and thermal stability: Standard grades of FVMQ rubber maintain their properties across temperatures from around -65°C (-85°F) to 200°C (392°F).
- Environmental resistance: Fluorosilicone resists ultraviolet (UV) light from the sun, ozone in the air, weathering, and moisture.
- Flame resistance: FVMQ rubber resists ignition and will self-extinguish; however, it can char or degrade.
- Flexibility and resilience: Unlike Viton (FKM), fluorosilicone remains flexible and resists compression set.
Disadvantages
- Lacks mechanical robustness: Compared to general-purpose rubbers, fluorosilicone has lower tear strength and less resistance to abrasion, friction, and wear.
- Limited chemical resistance: Fluorosilicone does not resist all chemicals. Some hydraulic fluids may cause swelling or hardening. Strong acids cause rapid degradation.
- Gas Permeation: FVMQ is susceptible to gas permeation, which can limit its utility in vacuum systems and high-pressure gas sealing applications.
- Higher cost: Fluorosilicone generally costs less than Viton (FKM), but FVMQ is more expensive than silicone and significantly more expensive than commodity elastomers.
- Limited resistance to water and steam: FVMQ is not suitable for hot water or steam. Fresh water and salt water can cause swelling.
Fluorosilicone Sheets
ElastaPro supplies pre-cut fluorosilicone sheets in:
- Thicknesses from .010” to .500”
- Widths up to 65”
- Durometers from 40 to 70 Shore A.
- Colors are typically blue, but customer colors are available.
Fluorosilicone Sheet Thicknesses
Common fluorosilicones sheet thicknesses include:
- 1/64” (0.0156”)
- 1/32” (0.032”)
- 1/16” (0.062”)
- 3/32” (0.093”)
- 1/18” (0.125”)
Fluorosilicone Sheet Sizes
Common fluorosilicone sheet sizes include:
- 12” x 12”
- 12” x 24”
- 36” x 36”
Fluorosilicone Rolls
ElastaPro supplies continuous fluorosilicone rolls in
- Thicknesses from .010” to .500”
- Widths up to 65”
- Durometers from 40 to 70 Shore A.
- Colors are typically blue, but customer colors are available.
Often, customers order fluorosilicone roll stock that is 36” wide.
Fluorosilicone Compound
Fluorosilicone uncured compound (FVMQ) arrives ready for curing and can be calendered, extruded, or compression molded. It offers the same high-performance characteristics as the solid fluorosilicone sheet materials we provide.
Fluorosilicone O-Ring Materials
Fluorosilicone compound from ElastaPro can be molded into fluorosilicone O-rings. Sizes vary but are available for both military and civilian applications.
Spec Grade Fluorosilicone Sheets, Rolls, and Uncured Compound
ElastaPro offers fluorosilicone sheets, rolls, and uncured compound that meet AMS specifications from SAE International and U.S. military specifications that meet detail (MIL-DTL) standards.
AMS Fluorosilicones
AMS fluorosilicones meet Aerospace Materials Specifations (AMS) from SAE International. ElastoPro offers these materials.
MIL-DTL-25988 and AMS-R-25988 Fluorosilicones
MIL-DTL-25988 appears on older part drawings but has been superseded by AMS-R-25988. ElastaPro supplies the following Types (TY), Classes (CL), and durometer-based grades (GR).
- AMSR25988 TY 2 CL1 GR40
- AMSR25988 TY2 CL1 GR50
- AMSR25988 TY2 CL1 GR60
- AMSR25988 TY2 CL1 GR70
Fluorosilicone Applications
Fluorosilicone rubber from ElastaPro can be fabricated into seals, gaskets, O-rings, and other parts for these and other applications.
Aerospace and Defense
- Fuel system O‑rings for jet‑A, JP‑8, and avgas exposure
- Gaskets and seals in aircraft fuel manifolds and fuel pump housings
- Diaphragms in fuel pressure regulators and metering valves
- Connector seals for MIL‑spec electrical connectors exposed to fuels
- UAV fuel bladder seals and propulsion‑system gaskets
- Hydraulic system seals where Skydrol or phosphate esters are present
- Environmental sealing boots on avionics and sensor housings
Automotive and Transportation
- Fuel injector O‑rings and fuel rail seals
- Turbocharger wastegate diaphragms exposed to oil mist and heat
- Vapor‑management system gaskets (EVAP systems)
- Fuel pump module seals
- Quick‑connect fuel line seals
- Transmission and powertrain vent seals
Industrial and Chemical Processing
- Pump and valve seals exposed to aromatic solvents
- Chemical transfer hose gaskets
- Metering pump diaphragms
- Solvent‑tank access‑panel gaskets
- Instrumentation seals for analyzers and chemical sensors
Energy, Oil and Gas
- Downhole tool seals requiring low‑temperature flexibility
- Fuel handling system gaskets for diesel and kerosene
- Compressor and generator fuel‑system O‑rings
- Chemical injection pump diaphragms
Electronics and Harsh‑Environment Enclosures
- Connector grommets and sealing boots for fuel‑exposed electronics
- Sensor housing gaskets in fuel‑rich or solvent‑rich environments
- Cable‑entry seals for aerospace and industrial control systems
Marine and Off‑Highway Equipment
- Diesel fuel system O‑rings
- Hydraulic system seals exposed to oils and additives
- Environmental gaskets for marine engine compartments
Fluorosilicone Rubber Price
Fluorosilicone is a high-performance material with different pricing for:
- raw materials
- low volumes vs. high volumes
- standard vs. specification-grade.
Prices are relatively stable, but there is high demand in the aerospace, defense, and automotive sectors because of fluorosilicone’s fuel and oil resistance. Request a quote from ElastaPro.
Fluorosilicone Rubber Temperature Range
Fluorosilicones generally operate from approximately –60°C to +200°C. While its high‑temperature limit is slightly lower than standard silicone, its chemical resistance makes it the preferred choice in fuel‑rich or solvent‑exposed environments.
FAQs about Fluorosilicone Rubber
Are fluorosilicone compatible with gasoline, diesel, and jet fuel?
Yes. Fluorosilicones are specifically engineered for resistance to fuels including gasoline, diesel, aviation fuels (Jet‑A, JP‑8), and many aromatic hydrocarbons. This is one of its primary advantages over standard silicone.
What chemicals are fluorosilicones NOT compatible with?
Fluorosilicones are not recommended for use with strong acids, strong bases, ketones (like MEK or acetone), or phosphate esters. These chemicals can cause degradation or excessive swelling. For these environments, engineers typically consider FKM/Viton™, EPDM, or specialty elastomers.
Do fluorosilicones have good compression set resistance?
Fluorosilicones have moderate compression set performance—better than many hydrocarbon elastomers but not as strong as high‑performance silicone or FKM.
Engineers often compensate with gland design, increased cross‑section, or optimized durometer selection.
Can fluorosilicones be used for food‑contact applications?
Generally no. Fluorosilicones are not typically formulated for FDA, BfR, or food‑contact compliance. Standard silicone or platinum‑cured food‑grade silicone is preferred for those applications.
Are fluorosilicones more expensive than standard silicone?
Yes. Fluorosilicones are more expensive due to its specialized chemistry and narrower production base. Engineers typically specify it only when fuel or solvent resistance is essential to system performance.
Can fluorosilicones be bonded, laminated, or PSA‑backed?
Yes. Fluorosilicone sheets can be laminated with pressure‑sensitive adhesives, bonded to fabrics, or converted into multi‑layer assemblies. Adhesive selection must consider chemical exposure and temperature.
Is fluorosilicone suitable for low‑temperature sealing?
Yes. Fluorosilicone maintains flexibility down to approximately –60°C, making it suitable for cold‑weather aerospace and defense applications where fuel exposure is present.
Does fluorosilicone resist ozone and UV?
Yes. Like standard silicone, fluorosilicone has excellent resistance to ozone, UV, and weathering, making it suitable for outdoor or long‑term environmental exposure.
Ask ElastaPro for Fluorosilicone Sheets, Rolls, and Compounds
Selecting the right material is critical for the success of any project. ElastaPro offers reliable and high-performance solutions. Contact ElastaPro today to discuss your needs and discover the right solution for your application.
Technical Articles
Fluorosilicone Chemical Compatibility Charts
