-161 BLACK BUNA 90D O-RING

The H90161 is an AS568-161 black Buna-N (Nitrile) 90 Shore A O-Ring measuring an inside diameter of 5.487 in (139.37 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 5.693 in (144.6 mm). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, low compression set under sustained load. The material holds up against water, petroleum-based oils, and propane and butane. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or strong acids are present.

Common environments for this compound include agricultural equipment, construction equipment, and fluid power.

H90161 ships individually. Unit weight is approximately 3.2501 g and nominal inside diameter is listed as 5 1/2 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.