568-123 BUNA 70 SQUARE CUT RINGS

The SH70123 is an AS568-123 black Buna-N (Nitrile) 70 Shore A Square-Cut Ring supplied with an inside diameter of 1.174 in (29.82 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.38 in (35.05 mm). This square-cut ring offers greater contact area against the gland wall than an equivalent o-ring.

Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Expect good resistance to greases and lubricants, propane and butane, and petroleum-based oils. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). The profile itself contributes a flat contact band that spreads sealing load across a wider area and a rectangular section that will not roll in the groove. Note that a square section is less suited to high-speed rotary service, where the larger contact area raises friction and heat.

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, construction equipment, and automotive.

Reference part number SH70123 when ordering; the item is sold individually. Unit weight is approximately 0.7853 g and nominal inside diameter is listed as 1 3/16 inch. Review your operating media and conditions against this specification before installation.