*4347-366Y MINNESOTA RUBBER QUAD RING

Part number HQ4347 is an AS568-347 black Buna-N (Nitrile) 70 Shore A Quad-Ring with an inside diameter of 4.225 in (107.32 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.645 in (117.98 mm). A quad-ring provides a dual sealing band on each contact face for improved reliability.

As a material, Buna-N (Nitrile) is valued for low compression set under sustained load and an economical choice for high-volume maintenance programs. Expect good resistance to water, greases and lubricants, and petroleum-based oils. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and two sealing bands per contact face rather than one.

Maintenance and OEM teams specify it across automotive, general industrial maintenance, and hydraulic and pneumatic systems.

HQ4347 ships individually. Nominal inside diameter is listed as 4 1/4 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.