4214-514AD MINNESOTA RUBBER QUAD RING

VQ4214 is an AS568-214 black Viton® (FKM) 75 Shore A quad profile Quad-Ring built to an inside diameter of 0.984 in (24.99 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.262 in (32.05 mm). In service, this quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

Expect good resistance to many acids, aggressive chemicals, and aromatic hydrocarbons. That behavior comes from the compound itself: Viton® (FKM) is known for excellent resistance to compression set and permeation, outstanding high-temperature capability. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). Applications involving ketones and esters or low-molecular-weight organic acids call for a different compound.

Common environments for this compound include aerospace, high-temperature process equipment, and semiconductor equipment.

Reference part number VQ4214 when ordering; the item is sold individually. Nominal inside diameter is listed as 1 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.