-137 BLACK BUNA 70D O-RING

Ordered as H70MD137, this is an AS568-137 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 2.05 in (52.07 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.256 in (57.3 mm). The o-ring compresses into its gland to block fluid or gas migration across a joint.

The material holds up against many alcohols, petroleum-based oils, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is known for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or strong acids are present.

This item is metal detectable for HACCP and foreign-body control programs. It sees regular use in agricultural equipment, fluid power, and general industrial maintenance.

Stocked as H70MD137 and sold individually. Nominal inside diameter is listed as 2 1/16 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.