568-209 FKM 75 SQUARE CUT RINGS

This quad-ring is supplied in AS568-209 black Viton® (FKM) 70 Shore A square profile built to an inside diameter of 0.671 in (17.04 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 0.949 in (24.1 mm), catalogued under part number SV70209. It uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

The material holds up against aromatic hydrocarbons, many acids, and petroleum oils and fuels. That behavior comes from the compound itself: Viton® (FKM) offers excellent resistance to compression set and permeation, the industry benchmark where nitrile reaches its thermal limit. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. Verify compatibility before use with low-molecular-weight organic acids or ketones and esters.

You will find this material specified across chemical processing, oil and gas, and aerospace.

Order part number SV70209, sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application.