Part number H70MD405 is an AS568-405 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 1.975 in (50.17 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 2.525 in (64.14 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
The compound resists water, greases and lubricants, and propane and butane. Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or automotive brake fluid.
The compound is metal detectable for HACCP and foreign-body control programs. You will find this material specified across hydraulic and pneumatic systems, automotive, and general industrial maintenance.
Reference part number H70MD405 when ordering; the item is sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Description -405 BLACK BUNA 70D O-RING
Actual Cross Section 0.275 inch (6.99 mm)
Actual Inside Diameter 1.975 inch (50.17 mm)
Actual Outside Diameter 2.525 inch (64.14 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable