568-011 BUNA 70 SQUARE CUT RINGS

APG stocks the SH70011, an AS568-011 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring with 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). A quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

It resists hydraulic fluids, propane and butane, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for low compression set under sustained load and an economical choice for high-volume maintenance programs. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.

You will find this material specified across general industrial maintenance, construction equipment, and hydraulic and pneumatic systems.

SH70011 ships individually. Unit weight is approximately 0.102 g and nominal inside diameter is listed as 5/16 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.