-388 BLACK BUNA 90D O-RING

This o-ring is supplied in AS568-388 black Buna-N (Nitrile) 90 Shore A with an inside diameter of 18.953 in (481.41 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 19.373 in (492.07 mm), catalogued under part number H90388. It creates a positive seal at flange, piston and rod interfaces without added hardware.

As a material, Buna-N (Nitrile) offers strong abrasion and tear resistance, low compression set under sustained load. It resists many alcohols, water, and petroleum-based oils. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to polar solvents or ketones will shorten service life.

Typical settings include general industrial maintenance, hydraulic and pneumatic systems, and fluid power.

Reference part number H90388 when ordering; the item is sold individually. Unit weight is approximately 44.233 g. Check the compound against your process media, pressure and temperature before committing to a design.