The V75MD390 is an AS568-390 blue Viton® (FKM) 75 Shore A O-Ring built to an inside diameter of 20.953 in (532.21 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 21.373 in (542.87 mm). This o-ring remains the most cost-effective sealing element available for pressurized assemblies.
Viton® (FKM) is known for very low compression set at elevated temperature, excellent resistance to compression set and permeation. It resists aggressive chemicals, chlorinated solvents, and many acids. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). It is not the right choice where hot water and steam or amines are present.
The compound meets FDA requirements for food contact, carries NSF listing, and is metal detectable for HACCP and foreign-body control programs. You will find this material specified across chemical processing, automotive fuel systems, and aerospace.
Order part number V75MD390, sold individually. Nominal inside diameter is listed as 21 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Description -390 BLUE FKM 75D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 20.953 inch (532.21 mm)
Actual Outside Diameter 21.373 inch (542.87 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable