-422 BLACK BUNA 90D O-RING

Part number H90422 is an AS568-422 black Buna-N (Nitrile) 90 Shore A O-Ring measuring an inside diameter of 4.1 in (104.14 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 4.65 in (118.11 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

As a material, Buna-N (Nitrile) delivers low compression set under sustained load and the most widely specified general-purpose sealing elastomer. The compound resists water, propane and butane, and petroleum-based oils. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It is not the right choice where ketones or automotive brake fluid are present.

Maintenance and OEM teams specify it across agricultural equipment, construction equipment, and fluid power.

Stocked as H90422 and sold individually. Unit weight is approximately 17.33 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.