-325 BLACK BUNA 50D O-RING

Ordered as H50325, this is an AS568-325 black Buna-N (Nitrile) 50 Shore A O-Ring measuring an inside diameter of 1.475 in (37.47 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.895 in (48.13 mm). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The compound resists water, greases and lubricants, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) is known for strong abrasion and tear resistance, reliable performance in both static and dynamic service. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving automotive brake fluid or ozone and direct sunlight call for a different compound.

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

H50325 ships individually. Unit weight is approximately 0.0039 g. Check the compound against your process media, pressure and temperature before committing to a design. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.