-149 BLACK BUNA 90D O-RING

The H90149 is an AS568-149 black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 2.8 in (71.12 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 3.006 in (76.35 mm). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The compound resists greases and lubricants, many alcohols, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, strong abrasion and tear resistance. 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 polar solvents are present.

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

This item is sold individually under part number H90149. Unit weight is approximately 1.6879 g and nominal inside diameter is listed as 2 13/16 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.