*4269-366Y MINNESOTA RUBBER QUAD RING

Part number HQ4269 is an AS568-269 black Buna-N (Nitrile) 70 Shore A Quad-Ring built to an inside diameter of 8.734 in (221.84 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 9.012 in (228.9 mm). A quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

The compound resists petroleum-based oils, hydraulic fluids, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) offers reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to ketones or automotive brake fluid will shorten service life. The profile itself contributes lower compressive load required to achieve a seal and two sealing bands per contact face rather than one.

Typical settings include hydraulic and pneumatic systems, agricultural equipment, and general industrial maintenance.

Order part number HQ4269, sold individually. Nominal inside diameter is listed as 8 3/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.