-209 BLACK BUNA 70D O-RING

Ordered as H70209, this is an AS568-209 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 0.671 in (17.04 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 0.949 in (24.1 mm). The o-ring compresses into its gland to block fluid or gas migration across a joint.

This material stands up to propane and butane, many alcohols, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in polar solvents or automotive brake fluid.

It sees regular use in agricultural equipment, fluid power, and automotive.

Reference part number H70209 when ordering; the item is sold individually. Unit weight is approximately 0.7724 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.