-321 BLACK BUNA 90D O-RING

Ordered as H90321, this is an AS568-321 black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 1.162 in (29.51 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.582 in (40.18 mm). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) is specified here for low compression set under sustained load, reliable performance in both static and dynamic service. The material holds up against petroleum-based oils, hydraulic fluids, and propane and butane. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or ketones are present.

Common environments for this compound include general industrial maintenance, agricultural equipment, and automotive.

This item is sold individually under part number H90321. Unit weight is approximately 3.229 g and nominal inside diameter is listed as 1 3/16 inch. 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.