-046 BLACK BUNA 90D O-RING

This o-ring is supplied in AS568-046 black Buna-N (Nitrile) 90 Shore A with an inside diameter of 4.239 in (107.67 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 4.379 in (111.23 mm), catalogued under part number H90046. It compresses into its gland to block fluid or gas migration across a joint.

It resists greases and lubricants, hydraulic fluids, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to ketones or ozone and direct sunlight will shorten service life.

Common environments for this compound include fluid power, general industrial maintenance, and agricultural equipment.

Reference part number H90046 when ordering; the item is sold individually. Unit weight is approximately 1.1563 g and nominal inside diameter is listed as 4 1/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.