CSFI customers can choose from six standard rubber O-ring materials, which are detailed here. Military Spec and FDA-approved O-rings are available and listed underneath the chart. Additional materials are available upon request. Contact us at inquiry.sealing@made-parts.com.
O-ring Material |
Properties & Applications |
Standard Temperature Range |
Shelf Life |
|---|---|---|---|
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* |
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* |
15 years |
Fluorosilicone |
Excellent fuel, oil and solvent resistance and commonly used in the automotive and aerospace industries. |
-55°C to 177°C* |
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* |
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* |
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* |
15 years |
* Additional temperature ranges available upon request.
