Buna 70-318-Black-Pk50

This o-ring is supplied in AS568-318 black Buna-N (Nitrile) 70 Shore A supplied with an inside diameter of 0.975 in (24.77 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.395 in (35.43 mm), catalogued under part number SB-H70318-50. It creates a positive seal at flange, piston and rod interfaces without added hardware. This item is further identified as 0.210CSX0.975"IDX1.395"OD.

Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. The compound resists water, greases and lubricants, and hydraulic fluids. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).

You will find this material specified across agricultural equipment, construction equipment, and general industrial maintenance.

Reference part number SB-H70318-50 when ordering; the item is sold by the bag. Application requirements vary, so validate compatibility with your process conditions prior to installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.