-247 BLACK BUNA 90D O-RING

APG stocks the H90247, an AS568-247 black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 4.609 in (117.07 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.887 in (124.13 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

As a material, Buna-N (Nitrile) is widely chosen for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. The compound resists water, petroleum-based oils, and propane and butane. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid or strong acids are present.

Typical settings include general industrial maintenance, hydraulic and pneumatic systems, and construction equipment.

H90247 ships individually. Unit weight is approximately 4.78 g and nominal inside diameter is listed as 4 5/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.