1.2MM CS X 2.6MM ID BLACK BUNA 70D

The H1.2X2.6 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 2.6 mm (0.102 in), a cross section of 1.2 mm (0.047 in), and an outside diameter of 5 mm (0.2 in). This o-ring compresses into its gland to block fluid or gas migration across a joint.

It resists petroleum-based oils, many alcohols, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is known for low compression set under sustained load, strong abrasion and tear resistance. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving polar solvents or strong acids call for a different compound.

It sees regular use in construction equipment, general industrial maintenance, and agricultural equipment.

Order part number H1.2X2.6, sold individually. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.