-128 WHITE BUNA 70D FDA O-RING

H70FDA128 is an AS568-128 white Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 1.487 in (37.77 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.693 in (43 mm). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is widely chosen for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. This material stands up to propane and butane, hydraulic fluids, and greases and lubricants. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Exposure to strong acids or polar solvents will shorten service life.

The compound meets FDA requirements for food contact under 21 CFR 177.2600. Typical settings include general industrial maintenance, automotive, and fluid power.

Order part number H70FDA128, sold individually. Unit weight is approximately 0.89 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.