568-008 BUNA 70 SQUARE CUT RINGS

This square-cut ring is supplied in AS568-008 black Buna-N (Nitrile) 70 Shore A built to an inside diameter of 0.176 in (4.47 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 0.316 in (8.03 mm), catalogued under part number SH70008. It offers greater contact area against the gland wall than an equivalent o-ring.

As a material, Buna-N (Nitrile) offers reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. This material stands up to propane and butane, water, and hydraulic fluids. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with strong acids or ozone and direct sunlight. The profile itself contributes simple lathe-cut manufacture at low tooling cost and a flat contact band that spreads sealing load across a wider area. Note that a square section is less suited to high-speed rotary service, where the larger contact area raises friction and heat.

You will find this material specified across fluid power, hydraulic and pneumatic systems, and agricultural equipment.

This item is sold individually under part number SH70008. Unit weight is approximately 0.061 g. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.