3.5MM CS X 105MM ID BLACK BUNA 70D

Part number H3.5X105 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 105 mm (4.134 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 112 mm (4.41 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against hydraulic fluids, propane and butane, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs and low compression set under sustained load. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or ketones.

Maintenance and OEM teams specify it across construction equipment, general industrial maintenance, and fluid power.

This item is sold individually under part number H3.5X105. Unit weight is approximately 4.123 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.