-153 BLACK BUNA 90D O-RING

This o-ring is supplied in AS568-153 black Buna-N (Nitrile) 90 Shore A built to an inside diameter of 3.487 in (88.57 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 3.693 in (93.8 mm), catalogued under part number H90153. It delivers dependable bidirectional sealing in a compact groove envelope.

This material stands up to hydraulic fluids, propane and butane, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is known for the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Exposure to strong acids or polar solvents will shorten service life.

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

Order part number H90153, sold individually. Unit weight is approximately 2.1583 g and nominal inside diameter is listed as 3 1/2 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.