568-323 BUNA 70 SQUARE CUT RINGS

Part number SH70323 is an AS568-323 black Buna-N (Nitrile) 70 Shore A Square-Cut Ring measuring an inside diameter of 1.287 in (32.69 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.707 in (43.36 mm). A square-cut ring resists the spiral failure that affects round rings on long reciprocating strokes.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer and low compression set under sustained load. The material holds up against hydraulic fluids, many alcohols, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where strong acids or ozone and direct sunlight 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.

Maintenance and OEM teams specify it across construction equipment, agricultural equipment, and fluid power.

This item is sold individually under part number SH70323. Nominal inside diameter is listed as 1 5/16 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.