*4143-366Y MINNESOTA RUBBER QUAD RING

Part number HQ4143 is an AS568-143 black Buna-N (Nitrile) 70 Shore A Quad-Ring with an inside diameter of 2.425 in (61.6 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.631 in (66.83 mm). A quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

Expect good resistance to greases and lubricants, water, and many alcohols. Buna-N (Nitrile) is valued for strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or polar solvents are present. The profile itself contributes a parting line located away from the sealing surface and resistance to the spiral twisting that defeats round-section rings.

Maintenance and OEM teams specify it across automotive, hydraulic and pneumatic systems, and general industrial maintenance.

This item is sold individually under part number HQ4143. Nominal inside diameter is listed as 2 7/16 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.