Q-204 BUNA 70 Q RING

QH70204 is an AS568-204 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 0.359 in (9.12 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 0.637 in (16.18 mm). In service, this quad-ring provides a dual sealing band on each contact face for improved reliability.

It resists water, petroleum-based oils, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. Service temperature is rated from -40°F (-40°C) through 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 automotive, fluid power, and construction equipment.

This item is sold individually under part number QH70204. Unit weight is approximately 0.476 g and nominal inside diameter is listed as 3/8 inch. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.