4MM CS X 104MM ID BLACK BUNA 70D

The H4X104 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 104 mm (4.094 in), a cross section of 4 mm (0.157 in), and an outside diameter of 112 mm (4.41 in). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

This material stands up to hydraulic fluids, greases and lubricants, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) offers low compression set under sustained load, reliable performance in both static and dynamic service. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where polar solvents or automotive brake fluid are present.

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

Reference part number H4X104 when ordering; the item is sold individually. Unit weight is approximately 5.186 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.