This quad-ring is supplied in AS568-366 black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 7.225 in (183.52 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 7.645 in (194.18 mm), catalogued under part number HQ4366. It provides a dual sealing band on each contact face for improved reliability.
As a material, Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. This material stands up to many alcohols, hydraulic fluids, and petroleum-based oils. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or ketones. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and lower compressive load required to achieve a seal.
It sees regular use in construction equipment, general industrial maintenance, and hydraulic and pneumatic systems.
Reference part number HQ4366 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design.
Description **4366-366Y MINNESOTA RUBBER QUAD RING
Actual Inside Diameter 7.225 inch (183.52 mm)
Actual Outside Diameter 7.645 inch (194.18 mm)
Actual Cross Section 0.21 inch (5.33 mm)
Measurement System Imperial
Product Category O-Rings - Square/Quad - Premium