3.5MM CS X 44MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 44 mm (1.732 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 51 mm (2.01 in), catalogued under part number H3.5X44. It remains the most cost-effective sealing element available for pressurized assemblies.

Buna-N (Nitrile) is widely chosen for strong abrasion and tear resistance, low compression set under sustained load. The compound resists propane and butane, water, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving ozone and direct sunlight or strong acids call for a different compound.

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

Reference part number H3.5X44 when ordering; the item is sold individually. Unit weight is approximately 1.833 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.