568-252 BUNA 70 SQUARE CUT RINGS

Part number SH70252 is an AS568-252 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring measuring an inside diameter of 5.234 in (132.94 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.512 in (140 mm). A quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

As a material, Buna-N (Nitrile) is known for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. It resists propane and butane, greases and lubricants, and many alcohols. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in automotive brake fluid or polar solvents.

Maintenance and OEM teams specify it across automotive, fluid power, and hydraulic and pneumatic systems.

Reference part number SH70252 when ordering; the item is sold individually. Unit weight is approximately 4.8496 g and nominal inside diameter is listed as 5 1/4 inch. Review your operating media and conditions against this specification before installation.