**4319-514AD MINNESOTA RUBBER QUAD RING

Ordered as VQ4319, this is an AS568-319 black Viton® (FKM) 75 Shore A quad profile Quad-Ring measuring an inside diameter of 1.037 in (26.34 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.457 in (37.01 mm). The quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

The compound resists many acids, chlorinated solvents, and engine and transmission fluids. Viton® (FKM) offers long service life in hot, chemically aggressive environments and the industry benchmark where nitrile reaches its thermal limit. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). Exposure to ketones and esters or hot water and steam will shorten service life.

Maintenance and OEM teams specify it across oil and gas, high-temperature process equipment, and aerospace.

Stocked as VQ4319 and sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.