568-223 BUNA 70 SQUARE CUT RINGS

This quad-ring is supplied in AS568-223 black Buna-N (Nitrile) 70 Shore A square profile built to an inside diameter of 1.609 in (40.87 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.887 in (47.93 mm), catalogued under part number SH70223. It delivers lower friction and better sealing stability than a comparable round-section o-ring.

The material holds up against water, petroleum-based oils, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.

Typical settings include construction equipment, agricultural equipment, and general industrial maintenance.

Order part number SH70223, sold individually. Unit weight is approximately 1.9634 g and nominal inside diameter is listed as 1 5/8 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.