5.7MM CS X 119.6MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 119.6 mm (4.709 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 131 mm (5.16 in), catalogued under part number H5.7X119.6. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. This item is further identified as Metric O-RING, JIS P120.

The compound resists water, petroleum-based oils, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for low compression set under sustained load, reliable performance in both static and dynamic service. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving polar solvents or automotive brake fluid call for a different compound.

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

Order part number H5.7X119.6, sold individually. Unit weight is approximately 12.227 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.