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View Full Version : Diffusion rate of R-22 through elastomers and polymers



pwned
14-08-2010, 07:44 PM
I have some R-22 in 425g cans with puncture top metal seal on top. The bottom and top are crimped in place, probably with polymer or elastomer seals.

I have a few empty ones from the same lot and the tare weight is around 115g. Net weight in each remaining can is about 10% less than what's printed by about 10%, which suggests it leaked over time.


I will record the weight of one sample for observation, but I'm guessing R22 is diffusing out the elastomer seal. None of them have detectable leak by soap bubbles.

If they won't remain sealed in unopened small containers, I'm not surprised that they leak out of even well designed systems. Is it possible to keep them from leaking completely?