568-332 BUNA 70 SQUARE CUT RINGS

This square-cut ring is supplied in AS568-332 black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 2.35 in (59.69 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.77 in (70.36 mm), catalogued under part number SH70332. It seals with a broad flat contact band instead of the line contact of a round-section ring.

Buna-N (Nitrile) is valued for strong abrasion and tear resistance, low compression set under sustained load. This material stands up to hydraulic fluids, petroleum-based oils, and propane and butane. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where automotive brake fluid or strong acids are present. The profile itself contributes simple lathe-cut manufacture at low tooling cost 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.

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

Reference part number SH70332 when ordering; the item is sold individually. Unit weight is approximately 6.7258 g. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.