H70MD143 is an AS568-143 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 2.425 in (61.6 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.631 in (66.83 mm). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. This material stands up to hydraulic fluids, petroleum-based oils, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with strong acids or ozone and direct sunlight.
The compound is metal detectable for HACCP and foreign-body control programs. Typical settings include construction equipment, hydraulic and pneumatic systems, and fluid power.
Order part number H70MD143, sold individually. Nominal inside diameter is listed as 2 7/16 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Description -143 BLACK BUNA 70D O-RING
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 2.425 inch (61.6 mm)
Actual Outside Diameter 2.631 inch (66.83 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable