Q-473 BUNA 70 Q RING

Part number QH70473 is an AS568-473 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 23.94 in (608.08 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 24.49 in (622.05 mm). A quad-ring provides a dual sealing band on each contact face for improved reliability.

The compound resists water, many alcohols, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for strong abrasion and tear resistance, low compression set under sustained load. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). The profile itself contributes resistance to the spiral twisting that defeats round-section rings and lower compressive load required to achieve a seal.

Typical settings include automotive, general industrial maintenance, and construction equipment.

Reference part number QH70473 when ordering; the item is sold individually. Nominal inside diameter is listed as 24 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.