-109 BLACK BUNA 90D O-RING

Part number H90109 is an AS568-109 black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 0.299 in (7.59 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 0.505 in (12.83 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

As a material, Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. The material holds up against water, many alcohols, and petroleum-based oils. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to automotive brake fluid or polar solvents will shorten service life.

It sees regular use in fluid power, construction equipment, and general industrial maintenance.

H90109 ships individually. Unit weight is approximately 0.2337 g and nominal inside diameter is listed as 5/16 inch. Review your operating media and conditions against this specification before installation.