-221 BLUE FKM 75D O-RING

Ordered as V75MD221, this is an AS568-221 blue Viton® (FKM) 75 Shore A O-Ring built to an inside diameter of 1.421 in (36.09 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.699 in (43.15 mm). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.

This material stands up to chlorinated solvents, many acids, and engine and transmission fluids. That behavior comes from the compound itself: Viton® (FKM) delivers excellent resistance to compression set and permeation, the industry benchmark where nitrile reaches its thermal limit. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). Verify compatibility before use with low-molecular-weight organic acids or hot water and steam.

This o-ring meets FDA requirements for food contact, carries NSF listing, and is metal detectable for HACCP and foreign-body control programs. It sees regular use in automotive fuel systems, chemical processing, and high-temperature process equipment.

This item is sold individually under part number V75MD221. Nominal inside diameter is listed as 1 7/16 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.