-131 BLACK BUNA 70D O-RING

Part number H70MD131 is an AS568-131 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 1.674 in (42.52 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.88 in (47.75 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

This material stands up to petroleum-based oils, many alcohols, and water. Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, low compression set under sustained load. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving automotive brake fluid or strong acids call for a different compound.

The compound is metal detectable for HACCP and foreign-body control programs. Typical settings include automotive, hydraulic and pneumatic systems, and fluid power.

Order part number H70MD131, sold individually. Nominal inside diameter is listed as 1 11/16 inch. 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.