*4050-366Y MINNESOTA RUBBER QUAD RING

This quad-ring is supplied in AS568-050 black Buna-N (Nitrile) 70 Shore A quad profile measuring an inside diameter of 4.239 in (107.67 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 5.379 in (136.63 mm), catalogued under part number HQ4050. It delivers lower friction and better sealing stability than a comparable round-section o-ring.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, most widely specified general-purpose sealing elastomer. This material stands up to hydraulic fluids, many alcohols, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ketones or polar solvents.

You will find this material specified across hydraulic and pneumatic systems, agricultural equipment, and construction equipment.

Reference part number HQ4050 when ordering; the item is sold individually. Nominal inside diameter is listed as 5 1/4 inch. Check the compound against your process media, pressure and temperature before committing to a design.