.139" C/S (1/8" NOMINAL) (3.53 MM)

APG stocks the 0284S139, a black Buna-N (Nitrile) 50 Shore A O-Ring Cord Stock supplied with a cross section of 0.139 in (3.53 mm). An o-ring cord stock lets you fabricate a custom-size seal on site by cutting and splicing to the required circumference.

As a material, Buna-N (Nitrile) is valued for strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. This material stands up to hydraulic fluids, water, and petroleum-based oils. Verify compatibility before use with strong acids or ozone and direct sunlight.

You will find this material specified across fluid power, hydraulic and pneumatic systems, and agricultural equipment.

Stocked as 0284S139 and sold by the foot. Check the compound against your process media, pressure and temperature before committing to a design.