-157 BLACK BUNA 70D O-RING

Ordered as H70157, this is an AS568-157 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 4.487 in (113.97 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 4.693 in (119.2 mm). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

As a material, Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs and low compression set under sustained load. This material stands up to greases and lubricants, petroleum-based oils, and hydraulic fluids. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or polar solvents are present.

Common environments for this compound include construction equipment, fluid power, and hydraulic and pneumatic systems.

This item is sold individually under part number H70157. Unit weight is approximately 0.0024 g. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.