**4273-366Y MINNESOTA RUBBER QUAD RING

Part number HQ4273 is an AS568-273 black Buna-N (Nitrile) 70 Shore A Quad-Ring built to an inside diameter of 9.734 in (247.24 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 10.012 in (254.3 mm). A quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs and low compression set under sustained load. The material holds up against propane and butane, water, and greases and lubricants. 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 lower compressive load required to achieve a seal.

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

Stocked as HQ4273 and sold individually. Nominal inside diameter is listed as 9 3/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.