The HQ4369 is an AS568-369 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 7.975 in (202.57 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 8.395 in (213.23 mm). This quad-ring seats in a standard o-ring gland while offering improved dynamic performance.
Buna-N (Nitrile) is known for strong abrasion and tear resistance, low compression set under sustained load. It resists hydraulic fluids, propane and butane, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). The profile itself contributes two sealing bands per contact face rather than one and lower compressive load required to achieve a seal.
Typical settings include automotive, general industrial maintenance, and construction equipment.
Order part number HQ4369, sold individually. Review your operating media and conditions against this specification before installation.
Description **4369-366Y MINNESOTA RUBBER QUAD RING
Actual Inside Diameter 7.975 inch (202.57 mm)
Actual Outside Diameter 8.395 inch (213.23 mm)
Actual Cross Section 0.21 inch (5.33 mm)
Measurement System Imperial
Product Category O-Rings - Square/Quad - Premium