The H3X52.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 52.5 mm (2.067 in), a cross section of 3 mm (0.118 in), and an outside diameter of 58.5 mm (2.3 in). This o-ring compresses into its gland to block fluid or gas migration across a joint.
As a material, Buna-N (Nitrile) is valued for low compression set under sustained load, reliable performance in both static and dynamic service. It resists many alcohols, water, and petroleum-based oils. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).
Maintenance and OEM teams specify it across hydraulic and pneumatic systems, agricultural equipment, and construction equipment.
Order part number H3X52.5, sold individually. Check the compound against your process media, pressure and temperature before committing to a design. 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 3MM CS X 52.5MM ID BLACK BUNA 70D
Actual Outside Diameter 58.5 mm (2.3 inch)
Actual Cross Section 3 mm (0.118 inch)
Actual Inside Diameter 52.5 mm (2.067 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity