The SH70233 is an AS568-233 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring measuring an inside diameter of 2.859 in (72.62 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.137 in (79.68 mm). This quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.
It resists propane and butane, many alcohols, and petroleum-based oils. Buna-N (Nitrile) is known for strong abrasion and tear resistance, reliable performance in both static and dynamic service. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).
Typical settings include automotive, fluid power, and hydraulic and pneumatic systems.
Order part number SH70233, sold individually. Unit weight is approximately 3.443 g and nominal inside diameter is listed as 2 7/8 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 568-233 BUNA 70 SQUARE CUT RINGS
Actual_CS 0.139 inch (3.53 mm)
Actual_ID 2.859 inch (72.62 mm)
Actual_OD 3.137 inch (79.68 mm)
ProductCode Description O-Rings - Square/Quad - Commodity