*4220-514AD MINNESOTA RUBBER QUAD RING

APG stocks the VQ4220, an AS568-220 black Viton® (FKM) 75 Shore A quad profile Quad-Ring built to an inside diameter of 1.359 in (34.52 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.637 in (41.58 mm). A quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

Viton® (FKM) is specified for the industry benchmark where nitrile reaches its thermal limit and very low compression set at elevated temperature. It resists aromatic hydrocarbons, chlorinated solvents, and many acids. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). Verify compatibility before use with hot water and steam or amines.

You will find this material specified across chemical processing, high-temperature process equipment, and aerospace.

Order part number VQ4220, sold individually. Nominal inside diameter is listed as 1 3/8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.