Part number H3.55X54.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 54.5 mm (2.146 in), a cross section of 3.55 mm (0.14 in), and an outside diameter of 61.6 mm (2.43 in). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
The compound resists greases and lubricants, propane and butane, and hydraulic fluids. Buna-N (Nitrile) is valued for strong abrasion and tear resistance, low compression set under sustained load. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving strong acids or polar solvents call for a different compound.
Typical settings include hydraulic and pneumatic systems, construction equipment, and automotive.
Order part number H3.55X54.5, sold individually. Unit weight is approximately 2.217 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Description 3.55MM CS X 54.5MM ID BLACK BUNA 70D
Actual Outside Diameter 61.6 mm (2.43 inch)
Actual Cross Section 3.55 mm (0.14 inch)
Actual Inside Diameter 54.5 mm (2.146 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity