4MM CS X 40MM ID BLACK BUNA 70D

Ordered as H4X40, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 40 mm (1.575 in), a cross section of 4 mm (0.157 in), and an outside diameter of 48 mm (1.89 in). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is specified here for low compression set under sustained load, strong abrasion and tear resistance. The compound resists hydraulic fluids, greases and lubricants, and water. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving ketones or ozone and direct sunlight call for a different compound.

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

This item is sold individually under part number H4X40. Unit weight is approximately 2.149 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.