**4026-366Y MINNESOTA RUBBER QUAD RING

The HQ4026 is an AS568-026 black Buna-N (Nitrile) 70 Shore A quad profile Quad-Ring supplied with an inside diameter of 1.239 in (31.47 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 1.379 in (35.03 mm). This quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

It resists water, greases and lubricants, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) offers low compression set under sustained load, reliable performance in both static and dynamic service. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or polar solvents.

Common environments for this compound include agricultural equipment, automotive, and general industrial maintenance.

HQ4026 ships individually. Nominal inside diameter is listed as 1 1/4 inch. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.