4330-366Y MINNESOTA RUBBER QUAD RING

HQ4330 is an AS568-330 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 2.1 in (53.34 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.52 in (64.01 mm). In service, this quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. This material stands up to hydraulic fluids, water, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to ozone and direct sunlight or ketones will shorten service life. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and a parting line located away from the sealing surface.

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, fluid power, and automotive.

This item is sold individually under part number HQ4330. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.