*4133-366Y MINNESOTA RUBBER QUAD RING

Ordered as HQ4133, this is an AS568-133 black Buna-N (Nitrile) 70 Shore A Quad-Ring built to an inside diameter of 1.799 in (45.69 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.005 in (50.93 mm). The quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

This material stands up to water, petroleum-based oils, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ketones or ozone and direct sunlight are present. The profile itself contributes a parting line located away from the sealing surface and resistance to the spiral twisting that defeats round-section rings.

Common environments for this compound include automotive, general industrial maintenance, and fluid power.

This item is sold individually under part number HQ4133. Nominal inside diameter is listed as 1 13/16 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.