In Reply to: Water Diffusion through polyacetal posted by Costa on February 21, 2007 at 02:37:58:

Dear Costa,

At a system temperature of 25 degrees Celsius, 1 bar system pressure, 100% humidity (Water vapour activity of 1), Water has the following transmission / permeation / permeability rate through an average grade of Polyacetal, also known as Acetal Resin or Polyoxymethylene (POM):

2 E-8 [gram / m x s].

Regards,
Composite Agency
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: Im after reliable values for water vapor diffusion through polyacetal. I can find data on moisture absorption, but not transmission rates.

: Thanks

: Im after reliable values for water vapor diffusion through polyacetal. I can find data on moisture absorption, but not transmission rates.

: Thanks