The HQ4140 is an AS568-140 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 2.237 in (56.82 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.443 in (62.05 mm). This quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.
This material stands up to hydraulic fluids, propane and butane, and many alcohols. Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs and low compression set under sustained load. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid 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.
Typical settings include hydraulic and pneumatic systems, general industrial maintenance, and construction equipment.
This item is sold individually under part number HQ4140. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Description *4140-366Y MINNESOTA RUBBER QUAD RING
Actual Inside Diameter 2.237 inch (56.82 mm)
Actual Outside Diameter 2.443 inch (62.05 mm)
Actual Cross Section 0.103 inch (2.62 mm)
Measurement System Imperial
Product Category O-Rings - Square/Quad - Premium