-327 BLACK FKM 70D SQUARE RING

The SV70327 is an AS568-327 black Viton® (FKM) 70 Shore A Square-Cut Ring supplied with an inside diameter of 1.725 in (43.82 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.145 in (54.48 mm). This square-cut ring resists the spiral failure that affects round rings on long reciprocating strokes.

As a material, Viton® (FKM) delivers outstanding high-temperature capability and very low compression set at elevated temperature. This material stands up to petroleum oils and fuels, aromatic hydrocarbons, and chlorinated solvents. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). Applications involving amines or ketones and esters call for a different compound. The profile itself contributes simple lathe-cut manufacture at low tooling cost 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.

Typical settings include chemical processing, aerospace, and automotive fuel systems.

Reference part number SV70327 when ordering; the item is sold individually. Nominal inside diameter is listed as 1 3/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.