5/8 SQUARE BUNA 70 O-RING CORD

APG stocks the 0296625, a black Buna-N (Nitrile) 70 Shore A Square-Cut Cord Stock with a cross section of 0.625 in (15.88 mm). A square-cut cord stock lets you fabricate a square-cut seal to any circumference without a special tooling charge.

Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, economical choice for high-volume maintenance programs. Expect good resistance to many alcohols, hydraulic fluids, and propane and butane. Verify compatibility before use with strong acids or ketones. The profile itself contributes greater resistance to extrusion than a round section of the same size and a flat contact band that spreads sealing load across a wider area. Note that a square section is less suited to high-speed rotary service, where the larger contact area raises friction and heat.

Common environments for this compound include fluid power, construction equipment, and agricultural equipment.

This item is sold by the foot under part number 0296625. Application requirements vary, so validate compatibility with your process conditions prior to 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.