4007-366Y MINNESOTA RUBBER QUAD RING

APG stocks the HQ4007, an AS568-007 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 0.145 in (3.68 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 0.285 in (7.24 mm). A quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. Expect good resistance to petroleum-based oils, greases and lubricants, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where strong acids or ozone and direct sunlight are present. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and two sealing bands per contact face rather than one.

You will find this material specified across automotive, agricultural equipment, and construction equipment.

Stocked as HQ4007 and sold individually. Nominal inside diameter is listed as 5/32 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.