568-354 BUNA 70 SQUARE CUT RINGS

SH70354 is an AS568-354 black Buna-N (Nitrile) 70 Shore A Square-Cut Ring supplied with an inside diameter of 5.1 in (129.54 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.52 in (140.21 mm). In service, this square-cut ring presents a flat rectangular section that cannot roll or twist in its groove, making it a dependable static seal.

Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. This material stands up to many alcohols, greases and lubricants, and hydraulic fluids. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). The profile itself contributes greater resistance to extrusion than a round section of the same size and a rectangular section that will not roll in the groove. Note that a square section is less suited to high-speed rotary service, where the larger contact area raises friction and heat.

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

Order part number SH70354, sold individually. Unit weight is approximately 14.05 g and nominal inside diameter is listed as 5 1/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.