The SH70912 is an AS568-912 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring with an inside diameter of 0.924 in (23.47 mm), a cross section of 0.116 in (2.95 mm), and an outside diameter of 1.156 in (29.36 mm). This quad-ring provides a dual sealing band on each contact face for improved reliability.
Expect good resistance to hydraulic fluids, water, and propane and butane. Buna-N (Nitrile) delivers the most widely specified general-purpose sealing elastomer and low compression set under sustained load. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to strong acids or polar solvents will shorten service life.
Common environments for this compound include hydraulic and pneumatic systems, agricultural equipment, and general industrial maintenance.
This item is sold individually under part number SH70912. Nominal inside diameter is listed as 3/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.
description 568-912 BUNA 70 SQUARE CUT RINGS
Actual_CS 0.116 inch (2.95 mm)
Actual_ID 0.924 inch (23.47 mm)
Actual_OD 1.156 inch (29.36 mm)
ProductCode Description O-Rings - Square/Quad - Commodity