568-165 BUNA 70 SQUARE CUT RINGS

This quad-ring is supplied in AS568-165 black Buna-N (Nitrile) 70 Shore A square profile with an inside diameter of 6.487 in (164.77 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 6.693 in (170 mm), catalogued under part number SH70165. It uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

The compound resists water, petroleum-based oils, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).

Maintenance and OEM teams specify it across fluid power, general industrial maintenance, and construction equipment.

This item is sold individually under part number SH70165. Unit weight is approximately 4.1696 g. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.