*4448-366Y MINNESOTA RUBBER QUAD RING

HQ4448 is an AS568-448 black Buna-N (Nitrile) 70 Shore A quad profile Quad-Ring built to an inside diameter of 9.475 in (240.67 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 10.025 in (254.64 mm). In service, this quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

The compound resists water, greases and lubricants, and propane and butane. Buna-N (Nitrile) is widely chosen for strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Exposure to automotive brake fluid or polar solvents will shorten service life.

Maintenance and OEM teams specify it across construction equipment, automotive, and fluid power.

Reference part number HQ4448 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.