Part number HQ4362 is an AS568-362 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 6.225 in (158.12 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 6.645 in (168.78 mm). A quad-ring provides a dual sealing band on each contact face for improved reliability.
Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, strong abrasion and tear resistance. Expect good resistance to propane and butane, greases and lubricants, and many alcohols. 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 ozone and direct sunlight or automotive brake fluid are present. The profile itself contributes lower compressive load required to achieve a seal and resistance to the spiral twisting that defeats round-section rings.
It sees regular use in automotive, hydraulic and pneumatic systems, and agricultural equipment.
Order part number HQ4362, sold individually. Nominal inside diameter is listed as 6 1/4 inch. Review your operating media and conditions against this specification before installation.
Description **4362-366Y MINNESOTA RUBBER QUAD RING
Actual Inside Diameter 6.225 inch (158.12 mm)
Actual Outside Diameter 6.645 inch (168.78 mm)
Actual Cross Section 0.21 inch (5.33 mm)
Measurement System Imperial
Product Category O-Rings - Square/Quad - Premium