**4178-514AD MINNESOTA RUBBER QUAD RING

VQ4178 is an AS568-178 black Viton® (FKM) 75 Shore A quad profile Quad-Ring with an inside diameter of 9.737 in (247.32 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 9.943 in (252.55 mm). In service, this quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

The compound resists aromatic hydrocarbons, chlorinated solvents, and petroleum oils and fuels. That behavior comes from the compound itself: Viton® (FKM) is specified for the industry benchmark where nitrile reaches its thermal limit and outstanding high-temperature capability. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service.

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

Reference part number VQ4178 when ordering; the item is sold individually. Nominal inside diameter is listed as 9 3/4. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.