4011-366Y MINNESOTA RUBBER QUAD RING

The HQ4011 is an AS568-011 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 0.301 in (7.65 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 0.441 in (11.2 mm). This quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

It resists greases and lubricants, water, and propane and butane. Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. 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 resistance to the spiral twisting that defeats round-section rings.

Typical settings include agricultural equipment, fluid power, and construction equipment.

Reference part number HQ4011 when ordering; the item is sold individually. Nominal inside diameter is listed as 5/16 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.