5.3MM CS X 155MM ID BLACK BUNA 70D

The H5.3X155 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 155 mm (6.102 in), a cross section of 5.3 mm (0.209 in), and an outside diameter of 165.6 mm (6.52 in). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

This material stands up to greases and lubricants, water, and petroleum-based oils. Buna-N (Nitrile) delivers reliable performance in both static and dynamic service, low compression set under sustained load. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to automotive brake fluid or ketones will shorten service life.

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

H5.3X155 ships individually. Unit weight is approximately 14.3566 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.