568-046 BUNA 70 SQUARE CUT RINGS

This quad-ring is supplied in AS568-046 black Buna-N (Nitrile) 70 Shore A square profile measuring an inside diameter of 4.239 in (107.67 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 4.379 in (111.23 mm), catalogued under part number SH70046. It resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

The compound resists greases and lubricants, petroleum-based oils, and propane and butane. Buna-N (Nitrile) is widely chosen for the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in strong acids or ozone and direct sunlight.

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

Reference part number SH70046 when ordering; the item is sold individually. Unit weight is approximately 1.059 g and nominal inside diameter is listed as 4 1/4 inch. 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.