568-028 FKM 75 SQUARE CUT RINGS

This square-cut ring is supplied in AS568-028 black Viton® (FKM) 70 Shore A supplied with an inside diameter of 1.364 in (34.65 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 1.504 in (38.2 mm), catalogued under part number SV70028. It presents a flat rectangular section that cannot roll or twist in its groove, making it a dependable static seal.

The material holds up against petroleum oils and fuels, many acids, and aggressive chemicals. Viton® (FKM) is valued for the industry benchmark where nitrile reaches its thermal limit and long service life in hot, chemically aggressive environments. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). Applications involving amines or ketones and esters call for a different compound. The profile itself contributes a rectangular section that will not roll in the groove and greater resistance to extrusion than a round section of the same size. 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 high-temperature process equipment, automotive fuel systems, and semiconductor equipment.

Order part number SV70028, sold individually. Unit weight is approximately 0.3155 g. Check the compound against your process media, pressure and temperature before committing to a design.