Buna 70-357-Black-Pk5

SB-H70357-5 is an AS568-357 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 5.475 in (139.07 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.895 in (149.73 mm). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. This item is further identified as 0.210CSX5.475"IDX5.895"OD.

Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. This material stands up to water, hydraulic fluids, and many alcohols. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Verify compatibility before use with ketones or ozone and direct sunlight.

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

Order part number SB-H70357-5, sold by the bag. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.