This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A built to an inside diameter of 5 mm (0.197 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 10 mm (0.39 in), catalogued under part number H2.5X5. It remains the most cost-effective sealing element available for pressurized assemblies.
Expect good resistance to many alcohols, hydraulic fluids, and petroleum-based oils. Buna-N (Nitrile) is valued for low compression set under sustained load, strong abrasion and tear resistance. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).
Maintenance and OEM teams specify it across automotive, agricultural equipment, and construction equipment.
Order part number H2.5X5, sold individually. Unit weight is approximately 0.1413 g. Review your operating media and conditions against this specification before installation. 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 5MM ID BLACK BUNA 70D
Actual Outside Diameter 10 mm (0.39 inch)
Actual Cross Section 2.5 mm (0.098 inch)
Actual Inside Diameter 5 mm (0.197 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity