This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 11 mm (0.433 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 18 mm (0.71 in), catalogued under part number H3.5X11. It delivers dependable bidirectional sealing in a compact groove envelope.
The compound resists greases and lubricants, petroleum-based oils, and many alcohols. Buna-N (Nitrile) offers low compression set under sustained load, 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). It should not be specified for service in strong acids or ozone and direct sunlight.
Typical settings include construction equipment, automotive, and agricultural equipment.
Reference part number H3.5X11 when ordering; the item is sold individually. Unit weight is approximately 0.535 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description 3.5MM CS X 11MM ID BLACK BUNA 70D
Actual Outside Diameter 18 mm (0.71 inch)
Actual Cross Section 3.5 mm (0.138 inch)
Actual Inside Diameter 11 mm (0.433 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity