HQ4108 is an AS568-108 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 0.237 in (6.02 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 0.443 in (11.25 mm). In service, this quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.
As a material, Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. The material holds up against petroleum-based oils, water, and propane and butane. Published continuous service range is -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 hydraulic and pneumatic systems, automotive, and fluid power.
HQ4108 ships individually. Nominal inside diameter is listed as 1/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Description *4108-366Y MINNESOTA RUBBER QUAD RING
Actual Inside Diameter 0.237 inch (6.02 mm)
Actual Outside Diameter 0.443 inch (11.25 mm)
Actual Cross Section 0.103 inch (2.62 mm)
Measurement System Imperial
Product Category O-Rings - Square/Quad - Premium