-048 BLACK BUNA 90D O-RING

Ordered as H90048, this is an AS568-048 black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 4.739 in (120.37 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 4.879 in (123.93 mm). The o-ring compresses into its gland to block fluid or gas migration across a joint.

As a material, Buna-N (Nitrile) delivers the most widely specified general-purpose sealing elastomer and low compression set under sustained load. The compound resists water, hydraulic fluids, and many alcohols. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or strong acids.

It sees regular use in general industrial maintenance, construction equipment, and hydraulic and pneumatic systems.

Reference part number H90048 when ordering; the item is sold individually. Nominal inside diameter is listed as 4 3/4 inch. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.