Q-282 BUNA 70 Q RING

Part number QH70282 is an AS568-282 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 15.955 in (405.26 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 16.233 in (412.32 mm). A quad-ring provides a dual sealing band on each contact face for improved reliability.

As a material, Buna-N (Nitrile) is specified for low compression set under sustained load, strong abrasion and tear resistance. The compound resists petroleum-based oils, propane and butane, and water. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). The profile itself contributes two sealing bands per contact face rather than one and resistance to the spiral twisting that defeats round-section rings.

Common environments for this compound include construction equipment, hydraulic and pneumatic systems, and fluid power.

Order part number QH70282, sold individually. Nominal inside diameter is listed as 16 inch. 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.