-344 BLACK BUNA 90D O-RING

This o-ring is supplied in AS568-344 black Buna-N (Nitrile) 90 Shore A built to an inside diameter of 3.85 in (97.79 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.27 in (108.46 mm), catalogued under part number H90344. It creates a positive seal at flange, piston and rod interfaces without added hardware.

It resists many alcohols, propane and butane, and petroleum-based oils. Buna-N (Nitrile) offers reliable performance in both static and dynamic service, strong abrasion and tear resistance. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or automotive brake fluid are present.

Maintenance and OEM teams specify it across automotive, general industrial maintenance, and agricultural equipment.

Reference part number H90344 when ordering; the item is sold individually. Unit weight is approximately 9.637 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.