568-428 FKM 75 SQUARE CUT RINGS

This quad-ring is supplied in AS568-428 black Viton® (FKM) 70 Shore A square profile supplied with an inside diameter of 4.85 in (123.19 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 5.4 in (137.16 mm), catalogued under part number SV70428. It seats in a standard o-ring gland while offering improved dynamic performance.

It resists many acids, chlorinated solvents, and petroleum oils and fuels. Viton® (FKM) offers the industry benchmark where nitrile reaches its thermal limit and outstanding high-temperature capability. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C). It is not the right choice where ketones and esters or hot water and steam are present.

It sees regular use in high-temperature process equipment, semiconductor equipment, and aerospace.

This item is sold individually under part number SV70428. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.