4MM CS X 173MM ID BLACK BUNA 70D

The H4X173 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 173 mm (6.811 in), a cross section of 4 mm (0.157 in), and an outside diameter of 181 mm (7.13 in). This o-ring compresses into its gland to block fluid or gas migration across a joint.

This material stands up to many alcohols, propane and butane, and hydraulic fluids. Buna-N (Nitrile) is widely chosen for low compression set under sustained load and an economical choice for high-volume maintenance programs. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving polar solvents or ketones call for a different compound.

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

Reference part number H4X173 when ordering; the item is sold individually. Unit weight is approximately 8.54 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.