4343-366Y MINNESOTA RUBBER QUAD RING

The HQ4343 is an AS568-343 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 3.725 in (94.62 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.145 in (105.28 mm). This quad-ring provides a dual sealing band on each contact face for improved reliability.

It resists hydraulic fluids, water, and propane and butane. Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or ketones. The profile itself contributes a parting line located away from the sealing surface and two sealing bands per contact face rather than one.

Typical settings include agricultural equipment, construction equipment, and general industrial maintenance.

Stocked as HQ4343 and sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.