*4284-366Y MINNESOTA RUBBER QUAD RING

Part number HQ4284 is an AS568-284 black Buna-N (Nitrile) 70 Shore A quad profile Quad-Ring measuring an inside diameter of 17.955 in (456.06 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 18.233 in (463.12 mm). A quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

This material stands up to petroleum-based oils, greases and lubricants, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to automotive brake fluid or polar solvents will shorten service life.

Maintenance and OEM teams specify it across fluid power, automotive, and general industrial maintenance.

This item is sold individually under part number HQ4284. Nominal inside diameter is listed as 18 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.