-126 BLACK BUNA 50D O-RING

This o-ring is supplied in AS568-126 black Buna-N (Nitrile) 50 Shore A measuring an inside diameter of 1.362 in (34.59 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.568 in (39.83 mm), catalogued under part number H50126. It compresses into its gland to block fluid or gas migration across a joint.

Expect good resistance to petroleum-based oils, propane and butane, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to ketones or automotive brake fluid will shorten service life.

It sees regular use in hydraulic and pneumatic systems, agricultural equipment, and construction equipment.

H50126 ships individually. Nominal inside diameter is listed as 1 3/8 inch. Review your operating media and conditions against this specification before installation. 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.