2.5MM CS X 12.5MM ID BLACK BUNA 70D

APG stocks the H2.5X12.5, a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 12.5 mm (0.492 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 17.5 mm (0.69 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against greases and lubricants, hydraulic fluids, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).

Maintenance and OEM teams specify it across construction equipment, hydraulic and pneumatic systems, and agricultural equipment.

Order part number H2.5X12.5, sold individually. Unit weight is approximately 0.2887 g. Review your operating media and conditions against this specification before installation.