Q-358 BUNA 70 Q RING

APG stocks the QH70358, an AS568-358 black Buna-N (Nitrile) 70 Shore A quad profile Quad-Ring measuring an inside diameter of 5.6 in (142.24 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 6.02 in (152.91 mm). A quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

As a material, Buna-N (Nitrile) delivers the most widely specified general-purpose sealing elastomer and low compression set under sustained load. It resists water, petroleum-based oils, and greases and lubricants. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to polar solvents or ozone and direct sunlight will shorten service life.

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

Reference part number QH70358 when ordering; the item is sold individually. Unit weight is approximately 12.678 g. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.