4MM CS X 119MM ID BLACK BUNA 70D

Ordered as H4X119, this is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 119 mm (4.685 in), a cross section of 4 mm (0.157 in), and an outside diameter of 127 mm (5 in). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, low compression set under sustained load. The compound resists greases and lubricants, petroleum-based oils, and hydraulic fluids. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in polar solvents or strong acids.

You will find this material specified across agricultural equipment, hydraulic and pneumatic systems, and fluid power.

Stocked as H4X119 and sold individually. Unit weight is approximately 5.9303 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.