Buna 70-316-Black-Pk50

SB-H70316-50 is an AS568-316 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 0.85 in (21.59 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.27 in (32.26 mm). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint. Additional detail on this item: 0.210CSX0.850"IDX1.270"OD.

Expect good resistance to greases and lubricants, hydraulic fluids, and petroleum-based oils. Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs and low compression set under sustained load. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to automotive brake fluid or ketones will shorten service life.

Maintenance and OEM teams specify it across automotive, agricultural equipment, and construction equipment.

Stocked as SB-H70316-50 and sold by the bag. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.