Ordered as H2.4X21.8, this is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 21.8 mm (0.858 in), a cross section of 2.4 mm (0.094 in), and an outside diameter of 26.6 mm (1.05 in). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. Additional detail on this item: Metric O-RING, JIS P22.
As a material, Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. The compound resists propane and butane, many alcohols, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ketones or polar solvents are present.
Typical settings include hydraulic and pneumatic systems, automotive, and construction equipment.
This item is sold individually under part number H2.4X21.8. Unit weight is approximately 0.4282 g. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description 2.4MM CS X 21.8MM ID BLACK BUNA 70D
Actual Outside Diameter 26.6 mm (1.05 inch)
Actual Cross Section 2.4 mm (0.094 inch)
Actual Inside Diameter 21.8 mm (0.858 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity