The SH70226 is an AS568-226 black Buna-N (Nitrile) 70 Shore A Square-Cut Ring measuring an inside diameter of 1.984 in (50.39 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.262 in (57.45 mm). This square-cut ring presents a flat rectangular section that cannot roll or twist in its groove, making it a dependable static seal.
As a material, Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. The compound resists greases and lubricants, petroleum-based oils, and water. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Verify compatibility before use with ozone and direct sunlight or ketones. The profile itself contributes a rectangular section that will not roll in the groove and simple lathe-cut manufacture at low tooling cost. 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 automotive, hydraulic and pneumatic systems, and general industrial maintenance.
This item is sold individually under part number SH70226. Unit weight is approximately 2.4354 g and nominal inside diameter is listed as 2 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.
description 568-226 BUNA 70 SQUARE CUT RINGS
Actual_CS 0.139 inch (3.53 mm)
Actual_ID 1.984 inch (50.39 mm)
Actual_OD 2.262 inch (57.45 mm)
ProductCode Description O-Rings - Square/Quad - Commodity