4320-366Y MINNESOTA RUBBER QUAD RING

HQ4320 is an AS568-320 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 1.1 in (27.94 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.52 in (38.61 mm). In service, this quad-ring provides a dual sealing band on each contact face for improved reliability.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Expect good resistance to hydraulic fluids, petroleum-based oils, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid or strong acids are present. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and two sealing bands per contact face rather than one.

It sees regular use in construction equipment, agricultural equipment, and hydraulic and pneumatic systems.

This item is sold individually under part number HQ4320. Nominal inside diameter is listed as 1 1/8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.