Extreme High Temperature Silicone
ElastaPro’s extreme high-temperature silicone is designed for applications that need higher temperature resistance than general purpose grade silicone can provide. This high-temperature material uses the latest in Heat Stabilizer Technology. It is easily die-cut and provides a superior gasket and sealing solution. Choose thicknesses from .010” to .500”, widths up to 60” wide, and various color and catalyst options. This high temp rubber sheet is available as solid silicone sheet and uncured silicone compound.
If you’re look for an industrial high temperature gasket material, contact ElastaPro.
What is Extreme High Temperature Silicone?
Extreme high temperature silicone is a specialized type of silicone rubber designed to maintain its physical and mechanical properties at exceptionally high temperatures—typically above 250°C (482°F) and up to 300°C (572°F) or more for short durations. Some grades, especially those reinforced with additives like fumed silica or ceramic fillers, can tolerate even higher intermittent temperatures, often reaching 315°C (600°F) or more.
What is High Temp Rubber Sheet?
A high temp rubber sheet is made of an elastomer that’s designed to withstand high heat while maintains its shape and properties. Typically, the elastomer that’s used is silicone. Compared to commodity rubber materials like EPDM, nitrile, and neoprene, silicone withstands higher temperatures. Extreme high temperature silicone withstands even higher temperatures than standard silicone. Applications for high temp rubber sheet include thermal insulation, gasketing, and heat shielding. Like other types of silicone, high temp silicone rubber sheet also withstands ozone, oxidation, and UV light.
Standard Silicone vs. Extreme High Temperature Silicone
The table below compares high heat silicone to standard silicone in terms of maximum continuous temperature, additives, cost, and durability in harsh heat.
| Property | Standard Silicone | Extreme High Temp Silicone |
|---|---|---|
| Max Continuous Temp | ~200–250°C | 250–300°C or higher |
| Additives | Basic fillers | Heat-resistant fillers or reinforcements |
| Cost | Lower | Higher due to enhanced formulation |
| Durability in Harsh Heat | Moderate | Excellent |
Extreme High Temperature Silicone in 55 or 60 Durometer (Shore A)
Extreme high temperature silicone from ElastaPro comes in two durometers, or hardness.
High Temperature Gasket Material: Key Characteristics
If you’re looking for a high temperature gasket material, consider these key characteristics of ElastaPro’s extreme high temp silicone.
- Extreme High & Low-Temperature Resistant -85ºF to +600ºF (Intermittent)
- Excellent for Seals & Gaskets
- Fabricated with high-quality and certified raw materials
- UV / Ozone Resistant & Excellent Electrical Insulator
- Cured Silicone Sheet is Non-Toxic & Chemically Inert
- >750PSI TENSILE, >90% ELONGATION, AND >70 TEAR (after 168 hrs at 300C)
High Heat Silicone: Material Properties
High heat silicone from ElastaPro has these material properties.
High Temp Silicone Advantages
There are many reasons to use ElastaPro materials for a high temperature silicone gasket.
- Thermal stability: Excellent resistance to heat degradation.
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Flexibility: Remains elastomeric (rubbery) at high temperatures.
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Chemical resistance: Withstands oils, solvents, and oxidation at elevated temps.
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Low outgassing: Suitable for cleanroom and aerospace use.
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Electrical insulation: Retains dielectric properties under heat stress.
High Heat Silicone Applications
High temperature silicone sheet and uncured compound is used in applications such as high temperature silicone door gaskets.
- Aerospace and aviation: Thermal insulation, engine gaskets, and fire barrier seals.
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Automotive: Turbocharger hoses, high-temp seals, and engine bay components.
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Industrial ovens and furnaces: Gaskets, seals, and thermal shielding.
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Electronics: High-temp wire insulation and potting compounds.
High Temp Silicone Gasket Material Suppliers
Are you comparing high temperature gasket material suppliers? ElastaPro is a Made in USA manufacturer with proven materials and a commitment to quality. Contact us.
Where to Find High Temperature Silicone: Infographic
All High Temp Rubber Sheet Is Not The Same
Do you need high temp rubber sheet materials? Silicone provides advantages over other elastomers, and high temperature silicone sheet withstands even higher temperatures. For Made in USA silicone sheeting you can depend upon, contact ElastaPro.
