568-049 BUNA 70 SQUARE CUT RINGS

Ordered as SH70049, this is an AS568-049 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring supplied with an inside diameter of 4.989 in (126.72 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 5.129 in (130.28 mm). The quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

This material stands up to petroleum-based oils, hydraulic fluids, and many alcohols. Buna-N (Nitrile) is widely chosen for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).

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

Reference part number SH70049 when ordering; the item is sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.