Part number H2.5X108 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 108 mm (4.252 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 113 mm (4.45 in). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
As a material, Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. This material stands up to greases and lubricants, petroleum-based oils, and hydraulic fluids. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).
Common environments for this compound include construction equipment, general industrial maintenance, and hydraulic and pneumatic systems.
Reference part number H2.5X108 when ordering; the item is sold individually. Unit weight is approximately 2.08 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
Description 2.5MM CS X 108MM ID BLACK BUNA 70D
Actual Outside Diameter 113 mm (4.45 inch)
Actual Cross Section 2.5 mm (0.098 inch)
Actual Inside Diameter 108 mm (4.252 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity