3MM CS X 107MM ID BLACK BUNA 70D

Ordered as H3X107, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 107 mm (4.213 in), a cross section of 3 mm (0.118 in), and an outside diameter of 113 mm (4.45 in). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Expect good resistance to many alcohols, water, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving ketones or strong acids call for a different compound.

You will find this material specified across hydraulic and pneumatic systems, automotive, and agricultural equipment.

Order part number H3X107, sold individually. Unit weight is approximately 3.02 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.