4203-366Y MINNESOTA RUBBER QUAD RING

The HQ4203 is an AS568-203 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 0.296 in (7.52 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 0.574 in (14.58 mm). This quad-ring provides a dual sealing band on each contact face for improved reliability.

Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, economical choice for high-volume maintenance programs. It resists many alcohols, water, and petroleum-based oils. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). The profile itself contributes a parting line located away from the sealing surface and lower compressive load required to achieve a seal.

Common environments for this compound include hydraulic and pneumatic systems, construction equipment, and fluid power.

Stocked as HQ4203 and sold individually. Nominal inside diameter is listed as 5/16 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.