APG stocks the V75MD349, an AS568-349 blue Viton® (FKM) 75 Shore A O-Ring with an inside diameter of 4.475 in (113.67 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.895 in (124.33 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.
It resists aggressive chemicals, chlorinated solvents, and aromatic hydrocarbons. Viton® (FKM) is known for very low compression set at elevated temperature and outstanding high-temperature capability. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C). Exposure to amines or low-molecular-weight organic acids will shorten service life.
This item 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 oil and gas, high-temperature process equipment, and semiconductor equipment.
Order part number V75MD349, sold individually. Nominal inside diameter is listed as 4 1/2 inch. Check the compound against your process media, pressure and temperature before committing to a design.
Description -349 BLUE FKM 75D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 4.475 inch (113.67 mm)
Actual Outside Diameter 4.895 inch (124.33 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable