4248-366Y MINNESOTA RUBBER QUAD RING

The HQ4248 is an AS568-248 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 4.734 in (120.24 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.012 in (127.3 mm). This quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

It resists many alcohols, propane and butane, and hydraulic fluids. Buna-N (Nitrile) offers reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with polar solvents or automotive brake fluid. The profile itself contributes a parting line located away from the sealing surface and resistance to the spiral twisting that defeats round-section rings.

Typical settings include general industrial maintenance, fluid power, and automotive.

Reference part number HQ4248 when ordering; the item is sold individually. Nominal inside diameter is listed as 4 3/4 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.