-377 BLUE FKM 75D O-RING

Ordered as V75MD377, this is an AS568-377 blue Viton® (FKM) 75 Shore A O-Ring measuring an inside diameter of 9.975 in (253.37 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 10.395 in (264.03 mm). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Expect good resistance to petroleum oils and fuels, engine and transmission fluids, and aromatic hydrocarbons. That behavior comes from the compound itself: Viton® (FKM) is valued for the industry benchmark where nitrile reaches its thermal limit and long service life in hot, chemically aggressive environments. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C). Exposure to low-molecular-weight organic acids or ketones and esters will shorten service life.

The compound meets FDA requirements for food contact, carries NSF listing, and is metal detectable for HACCP and foreign-body control programs. Maintenance and OEM teams specify it across automotive fuel systems, high-temperature process equipment, and semiconductor equipment.

Order part number V75MD377, sold individually. Nominal inside diameter is listed as 10 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.