-267 BLACK BUNA 90D O-RING

H90267 is an AS568-267 black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 8.234 in (209.14 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 8.512 in (216.2 mm). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is specified here for low compression set under sustained load and most widely specified general-purpose sealing elastomer. Expect good resistance to greases and lubricants, many alcohols, and petroleum-based oils. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving polar solvents or ketones call for a different compound.

Maintenance and OEM teams specify it across automotive, construction equipment, and fluid power.

Reference part number H90267 when ordering; the item is sold individually. Unit weight is approximately 8.55 g and nominal inside diameter is listed as 8 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.