Transeals has over 2 million metric & imperial O-rings in our inventory.

Sizing
In a world where virtually nothing is absolutely standard, O-rings sizes by convention are always stated as Inside Diameter x Cross Section.

Nitrile (NBR) 70

The most common elastomer used for industrial grade O-rings. Compatible with most mineral based hydraulic fluids with a working temperature range from -40°C to 110°C.

Nitrile (NBR) 90

Harder than Nitrile 70 and hence suitable for use as a high pressure O-ring or back up washer.

Viton 75

Possessing the broadest chemical compatibility of any mainstream elastomer, its broad working temperature range of -35°C to 205°C and excellent mechanical properties make this an excellent high performance compound for use in hydraulic systems.

Silicone, EPDM, Neoprene

..and other specialty compounds are available in many sizes or to order.