*4379-366Y MINNESOTA RUBBER QUAD RING

Ordered as HQ4379, this is an AS568-379 black Buna-N (Nitrile) 70 Shore A Quad-Ring with an inside diameter of 10.975 in (278.77 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 11.395 in (289.43 mm). The quad-ring provides a dual sealing band on each contact face for improved reliability.

It resists petroleum-based oils, water, and propane and butane. Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in polar solvents or strong acids. The profile itself contributes a parting line located away from the sealing surface and two sealing bands per contact face rather than one.

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

HQ4379 ships individually. Nominal inside diameter is listed as 11 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.