APG stocks the HQ4107, an AS568-107 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 0.206 in (5.23 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 0.412 in (10.46 mm). A quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.
Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, strong abrasion and tear resistance. It resists propane and butane, many alcohols, and hydraulic fluids. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). The profile itself contributes a parting line located away from the sealing surface and lower compressive load required to achieve a seal.
Maintenance and OEM teams specify it across general industrial maintenance, construction equipment, and agricultural equipment.
Reference part number HQ4107 when ordering; the item is sold individually. Nominal inside diameter is listed as 7/32 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Description **4107-366Y MINNESOTA RUBBER QUAD RING
Actual Inside Diameter 0.206 inch (5.23 mm)
Actual Outside Diameter 0.412 inch (10.46 mm)
Actual Cross Section 0.103 inch (2.62 mm)
Measurement System Imperial
Product Category O-Rings - Square/Quad - Premium