4026-514AD MINNESOTA RUBBER QUAD RING

This quad-ring is supplied in AS568-026 black Viton® (FKM) 75 Shore A quad profile measuring an inside diameter of 1.239 in (31.47 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 1.379 in (35.03 mm), catalogued under part number VQ4026. It delivers lower friction and better sealing stability than a comparable round-section o-ring.

Viton® (FKM) offers outstanding high-temperature capability and the industry benchmark where nitrile reaches its thermal limit. It resists many acids, chlorinated solvents, and aromatic hydrocarbons. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). It should not be specified for service in amines or low-molecular-weight organic acids.

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

Reference part number VQ4026 when ordering; the item is sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.