8-110 BLACK BUNA 90D BACK-UP RING

APG stocks the HB90110, an AS568-110 black Buna-N (Nitrile) 90 Shore A Back-Up Ring supplied with an inside diameter of 0.362 in (9.19 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 0.568 in (14.43 mm). A back-up ring extends o-ring service life by supporting the seal against extrusion under high pressure.

The compound resists many alcohols, petroleum-based oils, and propane and butane. Buna-N (Nitrile) is specified for low compression set under sustained load, strong abrasion and tear resistance. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving strong acids or ketones call for a different compound.

Common environments for this compound include agricultural equipment, fluid power, and general industrial maintenance.

Stocked as HB90110 and sold individually. Unit weight is approximately 0.2345 g. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.