NBR O-Rings 70 Shore A Oil Resistant Seals

NBR 70 Shore A O-rings are compatible with petroleum-based oils, hydraulic fluids, fuels, lubricants, and many water-based fluids. They are not recommended for use with ketones, esters, or aromatic solvents. Always verify compatibility with the specific fluid in your application before specifying a material.

Standard NBR 70 Shore A O-rings are rated for operating temperatures from -26°C to 125°C (-15°F to 257°F). Certain specialized NBR compounds can operate as low as -60°C. Always consult with our technical team to confirm suitability for extreme temperature applications.

Detroit Sealing Components offers NBR O-rings in a wide range of size standards including AS568 (US standard), BS 4518, JIS B2401 (P, G, S, V series), GB/T 3452.1, SMS 1586, JASO F404, and Metric sizes. Custom and infinite sizes are also available using our continuous molding process.

Standard NBR O-rings are not FDA-compliant for food contact. For food, beverage, drinking water, or sanitary applications, Detroit Sealing Components offers specially formulated seals certified to FDA CFR 177.2600, NSF 61, WRAS, and other international standards. Contact our team to select the right compliant material.

Yes. Detroit Sealing Components offers Infinite Size O-rings with no constraints on inner diameter, using a continuous molding process. Custom cross-sections from 3mm to 25mm are available. This eliminates costly tooling and reduces lead times significantly, making it ideal for large-scale or one-off sealing requirements.

Yes. We stock comprehensive O-Ring Kits in AS568, JIS B2401, and Metric sizes, including NBR 70 and NBR 90 durometer options. Kits are color-coded for easy identification. We also offer Excavator O-Ring Repair Kits specifically designed for hydraulic system maintenance on major heavy equipment brands.