4MM CS X 89MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 89 mm (3.504 in), a cross section of 4 mm (0.157 in), and an outside diameter of 97 mm (3.82 in), catalogued under part number H4X89. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The compound resists petroleum-based oils, many alcohols, and water. Buna-N (Nitrile) is specified for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where strong acids or automotive brake fluid are present.

You will find this material specified across construction equipment, general industrial maintenance, and agricultural equipment.

H4X89 ships individually. Unit weight is approximately 4.65 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.