The HQ4034 is an AS568-034 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 0.114 in (2.9 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 2.254 in (57.25 mm). This quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.
Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs and most widely specified general-purpose sealing elastomer. Expect good resistance to many alcohols, propane and butane, and petroleum-based oils. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in automotive brake fluid or polar solvents. The profile itself contributes lower compressive load required to achieve a seal and a parting line located away from the sealing surface.
You will find this material specified across automotive, agricultural equipment, and general industrial maintenance.
Reference part number HQ4034 when ordering; the item is sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Description *4034-366Y MINNESOTA RUBBER QUAD RING
Actual Inside Diameter 0.114 inch (2.9 mm)
Actual Outside Diameter 2.254 inch (57.25 mm)
Actual Cross Section 0.07 inch (1.78 mm)
Measurement System Imperial
Product Category O-Rings - Square/Quad - Premium