3.5MM CS X 49.7MM ID BLACK BUNA 70D

The H3.5X49.7 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 49.7 mm (1.957 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 56.7 mm (2.23 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 P50.

The compound resists hydraulic fluids, greases and lubricants, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving ketones or ozone and direct sunlight call for a different compound.

Typical settings include construction equipment, agricultural equipment, and hydraulic and pneumatic systems.

Order part number H3.5X49.7, sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.