This quad-ring is supplied in AS568-283 black Buna-N (Nitrile) 70 Shore A built to an inside diameter of 16.955 in (430.66 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 17.233 in (437.72 mm), catalogued under part number HQ4283. It resists spiral failure in reciprocating service thanks to its multi-lobe geometry.
The material holds up against hydraulic fluids, many alcohols, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs and low compression set under sustained load. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). The profile itself contributes resistance to the spiral twisting that defeats round-section rings and a parting line located away from the sealing surface.
You will find this material specified across general industrial maintenance, agricultural equipment, and automotive.
Order part number HQ4283, sold individually. Nominal inside diameter is listed as 17 inch. Review your operating media and conditions against this specification before installation.
Description *4283-366Y MINNESOTA RUBBER QUAD RING
Actual Inside Diameter 16.955 inch (430.66 mm)
Actual Outside Diameter 17.233 inch (437.72 mm)
Actual Cross Section 0.103 inch (2.62 mm)
Measurement System Imperial
Product Category O-Rings - Square/Quad - Premium