3MM CS X 109.5MM ID BLACK BUNA 70D

H3X109.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 109.5 mm (4.311 in), a cross section of 3 mm (0.118 in), and an outside diameter of 115.5 mm (4.55 in). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against water, propane and butane, and many alcohols. Buna-N (Nitrile) offers reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Applications involving ozone and direct sunlight or ketones call for a different compound.

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

Stocked as H3X109.5 and sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.