1.9MM CS X 2.8MM ID BLACK BUNA 70D

The H1.9X2.8 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 2.8 mm (0.11 in), a cross section of 1.9 mm (0.075 in), and an outside diameter of 6.6 mm (0.26 in). This o-ring remains the most cost-effective sealing element available for pressurized assemblies. This item is further identified as Metric O-RING, JIS P3.

It resists many alcohols, greases and lubricants, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for low compression set under sustained load, strong abrasion and tear resistance. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or ketones are present.

It sees regular use in fluid power, automotive, and hydraulic and pneumatic systems.

Reference part number H1.9X2.8 when ordering; the item is sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application.