Ordered as H3X54.5, this is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 54.5 mm (2.146 in), a cross section of 3 mm (0.118 in), and an outside diameter of 60.5 mm (2.38 in). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.
As a material, Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. Expect good resistance to water, petroleum-based oils, and greases and lubricants. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ketones or polar solvents are present.
Maintenance and OEM teams specify it across automotive, construction equipment, and agricultural equipment.
H3X54.5 ships individually. Check the compound against your process media, pressure and temperature before committing to a design.
Description 3MM CS X 54.5MM ID BLACK BUNA 70D
Actual Outside Diameter 60.5 mm (2.38 inch)
Actual Cross Section 3 mm (0.118 inch)
Actual Inside Diameter 54.5 mm (2.146 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity