3.5MM CS X 43.7MM ID BLACK BUNA 70D

Ordered as H3.5X43.7, this is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 43.7 mm (1.72 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 50.7 mm (2 in). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. This item is further identified as Metric O-RING, JIS P44.

Buna-N (Nitrile) is known for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. Expect good resistance to hydraulic fluids, greases and lubricants, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or polar solvents.

You will find this material specified across hydraulic and pneumatic systems, general industrial maintenance, and agricultural equipment.

This item is sold individually under part number H3.5X43.7. Unit weight is approximately 1.7271 g. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.