-475 BLACK FKM 70D SQUARE RING

Ordered as SV70475, this is an AS568-475 black Viton® (FKM) 70 Shore A Square-Cut Ring built to an inside diameter of 25.94 in (658.88 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 26.49 in (672.85 mm). The square-cut ring seals with a broad flat contact band instead of the line contact of a round-section ring.

It resists engine and transmission fluids, many acids, and aromatic hydrocarbons. That behavior comes from the compound itself: Viton® (FKM) offers long service life in hot, chemically aggressive environments and very low compression set at elevated temperature. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). It is not the right choice where amines or hot water and steam are present. The profile itself contributes greater resistance to extrusion than a round section of the same size 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.

You will find this material specified across high-temperature process equipment, chemical processing, and aerospace.

This item is sold individually under part number SV70475. Review your operating media and conditions against this specification before installation.