4111-366Y MINNESOTA RUBBER QUAD RING

Ordered as HQ4111, this is an AS568-111 black Buna-N (Nitrile) 70 Shore A Quad-Ring with an inside diameter of 0.424 in (10.77 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 0.63 in (16 mm). The quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

It resists petroleum-based oils, propane and butane, and many alcohols. Buna-N (Nitrile) is known for strong abrasion and tear resistance, 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). The profile itself contributes lower compressive load required to achieve a seal and a parting line located away from the sealing surface.

Typical settings include hydraulic and pneumatic systems, fluid power, and general industrial maintenance.

Reference part number HQ4111 when ordering; the item is sold individually. Review your operating media and conditions against this specification before installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.