.500 (1/2) 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 0.5 in (12.7 mm), catalogued under part number 0296500. It lets you fabricate a square-cut seal to any circumference without a special tooling charge.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. The compound resists propane and butane, hydraulic fluids, and many alcohols. Applications involving strong acids or ketones call for a different compound. 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.

You will find this material specified across agricultural equipment, fluid power, and general industrial maintenance.

Reference part number 0296500 when ordering; the item is sold by the foot. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.