This o-ring is supplied in AS568-318 black Viton® (FKM) 75 Shore A supplied with an inside diameter of 0.975 in (24.77 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.395 in (35.43 mm), catalogued under part number VITON75318. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
The compound resists aggressive chemicals, many acids, and petroleum oils and fuels. That behavior comes from the compound itself: Viton® (FKM) offers the industry benchmark where nitrile reaches its thermal limit and long service life in hot, chemically aggressive environments. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. Exposure to amines or ketones and esters will shorten service life.
It sees regular use in aerospace, semiconductor equipment, and automotive fuel systems.
Stocked as VITON75318 and sold individually. Unit weight is approximately 3.8754 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.
description -318 BLACK CHEMOURS VITON 75D O-RING
uf_description2 0.210" (5.33MM) CS X 0.975" (24.77MM) ID
Actual_CS 0.21 inch (5.33 mm)
Actual_ID 0.975 inch (24.77 mm)
Actual_OD 1.395 inch (35.43 mm)
ProductCode Description O-Rings - Bulk - Commodity