4119-366Y MINNESOTA RUBBER QUAD RING

APG stocks the HQ4119, an AS568-119 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 0.924 in (23.47 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.13 in (28.7 mm). A quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

The compound resists water, propane and butane, and petroleum-based oils. Buna-N (Nitrile) offers reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. The material carries a published service range of -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 two sealing bands per contact face rather than one and lower compressive load required to achieve a seal.

Maintenance and OEM teams specify it across general industrial maintenance, automotive, and agricultural equipment.

HQ4119 ships individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.