.156 (5/32) SQUARE BUNA 70 O-RING CORD

Part number 0296156 is a black Buna-N (Nitrile) 70 Shore A Square-Cut Cord Stock built to a cross section of 0.156 in (3.96 mm). A square-cut cord stock supplies profiled extrusion for grooves a round cord cannot fill.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, most widely specified general-purpose sealing elastomer. Expect good resistance to hydraulic fluids, petroleum-based oils, and water. Verify compatibility before use with strong acids or automotive brake fluid. The profile itself contributes a flat contact band that spreads sealing load across a wider area and a rectangular section that will not roll in the groove. Note that a square section is less suited to high-speed rotary service, where the larger contact area raises friction and heat.

Maintenance and OEM teams specify it across general industrial maintenance, hydraulic and pneumatic systems, and construction equipment.

0296156 ships by the foot. 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.