-124 BLACK BUNA 90D O-RING

H90124 is an AS568-124 black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 1.237 in (31.42 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.443 in (36.65 mm). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against greases and lubricants, petroleum-based oils, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen 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). It is not the right choice where strong acids or automotive brake fluid are present.

Maintenance and OEM teams specify it across automotive, construction equipment, and general industrial maintenance.

Stocked as H90124 and sold individually. Unit weight is approximately 0.7792 g and nominal inside diameter is listed as 1 1/4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.