*4118-514AD MINNESOTA RUBBER QUAD RING

Part number VQ4118 is an AS568-118 black Viton® (FKM) 75 Shore A quad profile Quad-Ring with an inside diameter of 0.862 in (21.89 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.068 in (27.13 mm). A quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

The material holds up against aggressive chemicals, many acids, and aromatic hydrocarbons. That behavior comes from the compound itself: Viton® (FKM) is valued for very low compression set at elevated temperature, excellent resistance to compression set and permeation. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). Exposure to low-molecular-weight organic acids or amines will shorten service life.

It sees regular use in aerospace, chemical processing, and semiconductor equipment.

Stocked as VQ4118 and sold individually. Check the compound against your process media, pressure and temperature before committing to a design.