-329 BLACK BUNA 90D O-RING

APG stocks the H90329, an AS568-329 black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 1.975 in (50.17 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.395 in (60.83 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

It resists greases and lubricants, propane and butane, and many alcohols. Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, strong abrasion and tear resistance. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or automotive brake fluid.

Maintenance and OEM teams specify it across fluid power, construction equipment, and general industrial maintenance.

H90329 ships individually. Unit weight is approximately 5.03 g. Review your operating media and conditions against this specification before installation.