Ordered as SH70376, this is an AS568-376 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring measuring an inside diameter of 9.725 in (247.02 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 10.145 in (257.68 mm). The quad-ring provides a dual sealing band on each contact face for improved reliability.
It resists petroleum-based oils, greases and lubricants, and many alcohols. Buna-N (Nitrile) delivers the most widely specified general-purpose sealing elastomer and low compression set under sustained load. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to automotive brake fluid or polar solvents will shorten service life.
It sees regular use in construction equipment, automotive, and hydraulic and pneumatic systems.
This item is sold individually under part number SH70376. Nominal inside diameter is listed as 9 3/4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
description 568-376 BUNA 70 SQUARE CUT RINGS
Actual_CS 0.21 inch (5.33 mm)
Actual_ID 9.725 inch (247.02 mm)
Actual_OD 10.145 inch (257.68 mm)
ProductCode Description O-Rings - Square/Quad - Commodity