.250" C/S (1/4" ACTUAL) (6.35 MM)

Ordered as 0284250, this is a black Buna-N (Nitrile) 70 Shore A O-Ring Cord Stock built to a cross section of 0.25 in (6.35 mm). The o-ring cord stock provides continuous extruded stock for building one-off or oversized rings.

Expect good resistance to water, hydraulic fluids, and greases and lubricants. Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. Exposure to ketones or automotive brake fluid will shorten service life.

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

0284250 ships by the foot. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.