O-ring Compound Descriptions

E70

Ethylene Propylene, EPDM:

EPDM is a terpolymer combining ethylene, propylene and a diene monomer. EP materials offer a temperature range of -65F to +300F and offer excellent resistance to ozone, weathering, steam, water and phosphate ester type hydraulic fluids. EP can be manufactured to conform to FDA requirements, making it ideal for use with foods and medical devices.

N70 / N90

Nitrile, Buna-N:

Nitrile, also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. Nitriles have a temperature range of -40F to +250F and are exceptionally resistant to petroleum base oils and hydrocarbon fuels. Nitrile materials also exhibit excellent tensile strength and abrasion resistance properties. Nitrile performs well with most dilute acids, silicone oils and lubricants. It is not recommended for use with ketones, aromatic hydrocarbons and phosphate ester hydraulic fluids.

S70

Silicone:

Silicone materials offer outstanding temperature resistance, from -80F to +400F. Silicone materials provide excellent resistance to sunlight, ozone, oxygen, UV light and moisture. It's inert qualities make it the preferred material for use with food handling and medical applications. Silicones offer poor tensile strength, tear and abrasion resistance, and are not recommend for use in dynamic applications.

V75BR

Fluorocarbon, VITON®:

VITON® is the trade name for DuPont-Dow Elastomers Fluorocarbon or FKM material. VITON® has a temperature range of -20F to +400Fand provides excellent resistance to a wide variety of chemicals. While exhibiting exceptional resistance to chemical attack, VITON® has limited low temperature capabilities. In some applications intermittent exposure to +600F can be tolerated for brief periods of time.

Note: These temperature ranges will apply to the majority of media for which the material is potentially recommended. With some media however, the service temperature service range may be significantly different.

ALWAYS TEST UNDER ACTUAL SERVICE CONDITIONS