568-218 BUNA 70 SQUARE CUT RINGS

Ordered as SH70218, this is an AS568-218 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring measuring an inside diameter of 1.234 in (31.34 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.512 in (38.4 mm). The quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

As a material, Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer and low compression set under sustained load. Expect good resistance to many alcohols, hydraulic fluids, and propane and butane. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).

It sees regular use in hydraulic and pneumatic systems, fluid power, and general industrial maintenance.

This item is sold individually under part number SH70218. Unit weight is approximately 1.2358 g and nominal inside diameter is listed as 1 1/4 inch. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.