-906 BLACK BUNA 90D O-RING

H90906 is an AS568-906 black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 0.468 in (11.89 mm), a cross section of 0.078 in (1.98 mm), and an outside diameter of 0.624 in (15.85 mm). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

It resists petroleum-based oils, propane and butane, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where polar solvents or strong acids are present.

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

Order part number H90906, sold individually. Unit weight is approximately 0.1907 g. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.