Choosing Your O-Ring Material

Silicone

Highly flexible; tolerates extreme temperatures and will not become brittle when exposed to low temperatures. Used in myriad industries, i.e. manufacturing, aerospace, automotive, medical device and electronics. It is not recommended for dynamic seals because it lacks optimal solvent or oil resistance.

-62°C to 204°C*
-80°F to 400°F*

Unlimited

Buna-N

Versatile resistance to saltwater/water, petroleum-based substances, hydraulic fuels and alcohols. Often used in marine and offshore equipment applications. Is not suitable for strong acids, weathering and sunlight.

-40°C to 107°C*
-40°F to 225°F*

15 years

Fluorosilicone

Excellent fuel, oil and solvent resistance and commonly used in the automotive and aerospace industries.

-55°C to 177°C*
-67°F to 350°F*

Unlimited

Fluorocarbon (Viton)

Withstands high temperatures, harsh chemicals, greases, fuels; ideal for sealing aircraft engines and equipment in the automotive, transportation and chemical industries.

-29°C to 204°C*
-20°F to 400°F*

Unlimited

EPDM

Outstanding ozone, heat, steam and chemical resistance; commonly used to seal outdoor equipment and weather / water-resistant applications and appliances.

-54°C to 107°C*
-65°F to 225°F*

Unlimited

Neoprene (Chloroprene)

Excellent at resisting ammonia, freon, and oil as well as ozone, sunlight and oxygen. Commonly used in the automotive, HVAC and refrigeration industries.

-40°C to 107°C*
-40°F to 225°F*

15 years