The H1.5X2.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 2.5 mm (0.098 in), a cross section of 1.5 mm (0.059 in), and an outside diameter of 5.5 mm (0.22 in). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. Additional detail on this item: Metric O-RING, JIS S3.
It resists propane and butane, water, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).
Maintenance and OEM teams specify it across hydraulic and pneumatic systems, fluid power, and construction equipment.
Stocked as H1.5X2.5 and sold individually. Unit weight is approximately 0.0278 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Description 1.5MM CS X 2.5MM ID BLACK BUNA 70D
Actual Outside Diameter 5.5 mm (0.22 inch)
Actual Cross Section 1.5 mm (0.059 inch)
Actual Inside Diameter 2.5 mm (0.098 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity