**4267-366Y MINNESOTA RUBBER QUAD RING

Ordered as HQ4267, this is an AS568-267 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 8.234 in (209.14 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 8.512 in (216.2 mm). The quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

As a material, Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. It resists water, hydraulic fluids, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ketones or ozone and direct sunlight. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and a parting line located away from the sealing surface.

It sees regular use in hydraulic and pneumatic systems, fluid power, and general industrial maintenance.

This item is sold individually under part number HQ4267. Nominal inside diameter is listed as 8 1/4 inch. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.