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Viton V91A O-Rings
Viton® (fluorocarbon rubber) has excellent resistance to high temperatures, ozone, oxygen, mineral oil, synthetic hydraulic fluids, fuels, aromatics and many organic solvents and chemicals making it a good choice for an o-ring material.
Low temperature resistance is normally not favorable and for static applications is limited to approximately -15 °F (-26 °C) although in certain situations it is suitable down to -40 °F (-40 °C) Under dynamic conditions, the lowest service temperature is between 5 °F and 0 °F (-15 °C and -18 °C).
Gas permeability is very low and similar to that of butyl rubber. Special fluorocarbon compounds exhibit an improved resistance to acids, fuels, water and steam.
Viton® O-Ring General Attributes
- Excellent Heat resistance
- Excellent resistance to oils
- Low compression set
- Good fuel resistance
- Excellent ozone and weather resistance
Common Applications for Viton® O-Rings
- Engine Oil Seals
- Fuel Systems
- High Temperature Seals
- Petrochemical Systems
|Flurocarbon Compuond||Available Specifications||Key Characteristics||Average Temperature Ranges|
|Commercial||ASTM D2000||Available in black or brown. Excellent resistance to head and a wide range of chemicals.||5° to 446°F|
|Meets AMS7276. Excellent resistance to heat, engine oils and lubricants, ozone and weathering. Low compression set and good fuel resistance.||-13° to 392°F|
|Meets AMS7259. Similar to AMS 7276 above except in 90-durometer hardness.||-13° to 392°F|
|M83485/1 GLT Type||M84385/1,
|Meets AMS-R-83485. Excellent heat resistance and low temperature performance. GLT Type Viton.||-35° to 400°F|
|GFLT Viton||ASTM D2000 / SAE J200,
M7HK 710 A1-10
EF31 Z1 Z2 Z3
|GFLT based FKM. Good for low temp with improved chemical resistance. Listed for fuel/alcohol applications.||-31° to 392°F|
|FDA Viton||ASTM D2000 /
M2HK 710 A1-10
B38 EF31 F15 Z
|FDA, USDA, and NSF grades available.||-4° to 392°F|
|Viton Extreme||Extreme chemical service. Strong bases and amines. Peroxide cured.||-4° to 392°F|
|Viton V91A||Low Temperature applications. Explosive decompression resistant.||-51° to 437°F|
Seal & Design is a leading supplier of Viton® O-rings and custom molded seals. We offer both genuine Viton® and standard fluorocarbon materials for general purpose and high performance applications. Selecting the type of Viton® that best fits your application is important, but it isn't complicated, and help is available from Seal & Design. We also offer gaskets made out of Viton®.