This o-ring is supplied in AS568-237 black Viton® (FKM) 75 Shore A with an inside diameter of 3.359 in (85.32 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.637 in (92.38 mm), catalogued under part number VITON75237. It remains the most cost-effective sealing element available for pressurized assemblies.
Viton® (FKM) is specified here for industry benchmark where nitrile reaches its thermal limit and very low compression set at elevated temperature. The compound resists engine and transmission fluids, many acids, and aromatic hydrocarbons. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C).
You will find this material specified across high-temperature process equipment, chemical processing, and automotive fuel systems.
Stocked as VITON75237 and sold individually. Unit weight is approximately 5.072 g and nominal inside diameter is listed as 3 3/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
description -237 BLACK CHEMOURS VITON 75D O-RING
uf_description2 0.139" (3.53MM) CS X 3.359" (85.32MM) ID
Actual_CS 0.139 inch (3.53 mm)
Actual_ID 3.359 inch (85.32 mm)
Actual_OD 3.637 inch (92.38 mm)
ProductCode Description O-Rings - Bulk - Commodity