.437 (7/16) SQUARE BUNA 70 O-RING CORD

This square-cut cord stock is supplied in black Buna-N (Nitrile) 70 Shore A measuring a cross section of 0.437 in (11.1 mm), catalogued under part number 0296437. It supplies profiled extrusion for grooves a round cord cannot fill.

The compound resists water, petroleum-based oils, and many alcohols. Buna-N (Nitrile) is specified for strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. It should not be specified for service in ketones or polar solvents. The profile itself contributes a rectangular section that will not roll in the groove and greater resistance to extrusion than a round section of the same size. Note that a square section is less suited to high-speed rotary service, where the larger contact area raises friction and heat.

You will find this material specified across general industrial maintenance, construction equipment, and hydraulic and pneumatic systems.

0296437 ships by the foot. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.