*4251-514AD MINNESOTA RUBBER QUAD RING

This quad-ring is supplied in AS568-251 black Viton® (FKM) 75 Shore A quad profile built to an inside diameter of 5.109 in (129.77 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 5.387 in (136.83 mm), catalogued under part number VQ4251. It seats in a standard o-ring gland while offering improved dynamic performance.

Viton® (FKM) is specified for excellent resistance to compression set and permeation, outstanding high-temperature capability. This material stands up to petroleum oils and fuels, engine and transmission fluids, and aromatic hydrocarbons. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). Applications involving low-molecular-weight organic acids or amines call for a different compound.

It sees regular use in oil and gas, aerospace, and semiconductor equipment.

Reference part number VQ4251 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.