*4136-366Y MINNESOTA RUBBER QUAD RING

APG stocks the HQ4136, an AS568-136 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 1.987 in (50.47 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.193 in (55.7 mm). A quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, economical choice for high-volume maintenance programs. It resists propane and butane, petroleum-based oils, and hydraulic fluids. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. The profile itself contributes lower compressive load required to achieve a seal and a parting line located away from the sealing surface.

Maintenance and OEM teams specify it across construction equipment, general industrial maintenance, and agricultural equipment.

Order part number HQ4136, sold individually. Nominal inside diameter is listed as 2 inch. Check the compound against your process media, pressure and temperature before committing to a design.