Ordered as HQ4244, this is an AS568-244 black Buna-N (Nitrile) 70 Shore A Quad-Ring built to an inside diameter of 4.234 in (107.54 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.512 in (114.6 mm). The quad-ring provides a dual sealing band on each contact face for improved reliability.
As a material, Buna-N (Nitrile) is known for low compression set under sustained load, strong abrasion and tear resistance. The material holds up against greases and lubricants, many alcohols, 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 strong acids or polar solvents. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and two sealing bands per contact face rather than one.
Common environments for this compound include general industrial maintenance, construction equipment, and automotive.
HQ4244 ships individually. Review your operating media and conditions against this specification before installation.
Description *4244-366Y MINNESOTA RUBBER QUAD RING
Actual Inside Diameter 4.234 inch (107.54 mm)
Actual Outside Diameter 4.512 inch (114.6 mm)
Actual Cross Section 0.139 inch (3.53 mm)
Measurement System Imperial
Product Category O-Rings - Square/Quad - Premium