Part number H1.9X7.2 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 7.2 mm (0.283 in), a cross section of 1.9 mm (0.075 in), and an outside diameter of 11 mm (0.43 in). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
Buna-N (Nitrile) is known for the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. The material holds up against water, many alcohols, and propane and butane. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving polar solvents or ozone and direct sunlight call for a different compound.
It sees regular use in construction equipment, general industrial maintenance, and hydraulic and pneumatic systems.
Reference part number H1.9X7.2 when ordering; the item is sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Description 1.9MM CS X 7.2MM ID BLACK BUNA 70D
Actual Outside Diameter 11 mm (0.43 inch)
Actual Cross Section 1.9 mm (0.075 inch)
Actual Inside Diameter 7.2 mm (0.283 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity