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Types
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  Materials
 

Materials

 
Silicone (Q, MQ, VMQ, PVMQ)
Silicone rubber is generally non-reactive, stable, and resistant to extreme environments and temperatures from -50°C to +232°C while still maintaining its useful properties.

Silicone compounds are very clean and are used in many food and medical applications.
 
 
 
Fluorosilicone (FVMQ)
Fluorosilicone elastomers combine the good high and low temperature properties of silicone with basic fuel and oil resistance. The primary uses of fluorosilicone materials are in fuel systems at temperatures up to +177°C and in applications where the dry-heat resistance of silicone is required but the material may be exposed to petroleum oils and/or hydrocarbon fuels. Fluorosilicone has limitations at higher temperatures due to degradation of certain fluids, producing acids which attack the fluorosilicone elastomer.
 
 
 
Viton® (FKM)
The most specified material with temperature resistance to 200°C as well as resistant to aggressive fuels, acids, and other chemicals. Excellent compression set resistance Used in the semiconductor, chemical processing industries, and many others.
 
 
 
Buna-N/Nitrile (NBR)
Due to its excellent resistance to petroleum products, and its ability to be compounded for service over a temperature range of -35°C to +120°C, nitrile is the most widely used elastomer in the seal industry today.
 
 
 
Neoprene (CR)
It is moderately resistant to both petroleum oils and weather (ozone, UV, oxygen). Neoprene is classified as a general purpose elastomer which has relatively low compression set, good resilience and abrasion, and is flex cracking resistant. It is used extensively for sealing refrigeration fluids due to its excellence resistance to Freon® and ammonia.
 
 
 
Ethylene Propylene Rubber (EPDM, EPR)
EPDM has a temperature range of -50°C to +120°/150°C, depending on the curing system. It has great resistance to heat, water and steam, alkali, mild acidic and oxygenated solvents, ozone, and sunlight. Also resistant to alcohols, glycol engine coolants and SKY-DROL (phosphate ester hydraulic fluid).
 
 
Conductive Elastomers
Are conductive rubber sealing materials used to form physical sealing barriers as well as shielding electronic equipment from unwanted emissions or noise. They are ideal for both military and commercial applications requiring both environmental sealing and EMI shielding. Compounds can be supplied in molded or extruded shapes, sheet stock, custom extruded or die-cut shapes to meet a wide variety of applications.