5.7MM CS X 139.3MM ID BLACK BUNA 70D

The H5.7X139.3 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 139.3 mm (5.484 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 150.7 mm (5.93 in). This o-ring compresses into its gland to block fluid or gas migration across a joint.

As a material, Buna-N (Nitrile) is valued for low compression set under sustained load, reliable performance in both static and dynamic service. This material stands up to propane and butane, many alcohols, and greases and lubricants. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in automotive brake fluid or ketones.

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

This item is sold individually under part number H5.7X139.3. Unit weight is approximately 14.36 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.