-145 BLACK BUNA 90D O-RING

Part number H90145 is an AS568-145 black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 2.55 in (64.77 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.756 in (70 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Buna-N (Nitrile) is widely chosen for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. This material stands up to hydraulic fluids, petroleum-based oils, and many alcohols. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in automotive brake fluid or ketones.

It sees regular use in general industrial maintenance, construction equipment, and hydraulic and pneumatic systems.

Stocked as H90145 and sold individually. Unit weight is approximately 1.594 g and nominal inside diameter is listed as 2 9/16 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.