*4031-514AD MINNESOTA RUBBER QUAD RING

This quad-ring is supplied in AS568-031 black Viton® (FKM) 75 Shore A quad profile measuring an inside diameter of 1.739 in (44.17 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 1.879 in (47.73 mm), catalogued under part number VQ4031. It delivers lower friction and better sealing stability than a comparable round-section o-ring.

This material stands up to engine and transmission fluids, petroleum oils and fuels, and many acids. That behavior comes from the compound itself: Viton® (FKM) offers very low compression set at elevated temperature and long service life in hot, chemically aggressive environments. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). It is not the right choice where ketones and esters or hot water and steam are present.

It sees regular use in chemical processing, automotive fuel systems, and oil and gas.

Order part number VQ4031, sold individually. Nominal inside diameter is listed as 1 3/4 inch. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.