O-rings are the most commonly used seal in the world due to their simple, economical and efficient design. O’ rings are simply measured by the inside Diameter (ID) and section size. There are many material options available as shown below.

Nitrile (NBR) 70

The most common material 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.


Possessing the broadest chemical compatibility of any oring material, 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 and harsh environments.

Silicone, EPDM, and Neoprene are also available.

We also stock a range of Metric and Imperial o ring kits in Nitrile and Viton.

Need Assistance Selecting the correct Oil Seal or O-Ring?

If you need assistance selecting the correct Oil Seal or O-ring for your particular application, please give us a call and talk to one of our knowledgeable staff. We’re here to help and problem solve for you.