H70225 is an AS568-225 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 1.859 in (47.22 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.137 in (54.28 mm). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
It resists hydraulic fluids, propane and butane, and water. That behavior comes from the compound itself: Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ketones or automotive brake fluid are present.
It sees regular use in hydraulic and pneumatic systems, fluid power, and agricultural equipment.
This item is sold individually under part number H70225. Unit weight is approximately 0.0019 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Description -225 BLACK BUNA 70D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 1.859 inch (47.22 mm)
Actual Outside Diameter 2.137 inch (54.28 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity