-236 BLACK BUNA 90D O-RING

Ordered as H90236, this is an AS568-236 black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 3.234 in (82.14 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.512 in (89.2 mm). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs and most widely specified general-purpose sealing elastomer. This material stands up to propane and butane, many alcohols, and hydraulic fluids. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to ketones or strong acids will shorten service life.

You will find this material specified across fluid power, agricultural equipment, and hydraulic and pneumatic systems.

Stocked as H90236 and sold individually. Unit weight is approximately 3.4597 g and nominal inside diameter is listed as 3 1/4 inch. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.