8-013 BLACK BUNA 90D BACK-UP RING

This back-up ring is supplied in AS568-013 black Buna-N (Nitrile) 90 Shore A measuring an inside diameter of 0.426 in (10.82 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 0.566 in (14.38 mm), catalogued under part number HB90013. It installs on the low-pressure side of an o-ring to prevent extrusion into the clearance gap at elevated pressure.

Expect good resistance to petroleum-based oils, propane and butane, and many alcohols. Buna-N (Nitrile) offers reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. 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 ketones or ozone and direct sunlight are present.

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

This item is sold individually under part number HB90013. Unit weight is approximately 0.086 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.