H2.5X28.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 28.5 mm (1.122 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 33.5 mm (1.32 in). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint.
Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer and low compression set under sustained load. The material holds up against many alcohols, water, and greases and lubricants. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Applications involving strong acids or ozone and direct sunlight call for a different compound.
Maintenance and OEM teams specify it across agricultural equipment, automotive, and hydraulic and pneumatic systems.
H2.5X28.5 ships 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 2.5MM CS X 28.5MM ID BLACK BUNA 70D
Actual Outside Diameter 33.5 mm (1.32 inch)
Actual Cross Section 2.5 mm (0.098 inch)
Actual Inside Diameter 28.5 mm (1.122 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity