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Better replacement for chamber seal?

chamber seal

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#1 Wolf9653



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Posted 25 March 2014 - 04:50 PM

Hi everyone, I'm new to this forum.
I currently own a KWA USP .45 GBB. And I use propane to power it, I know KWA does not recommend it at all, but anyway... It works flawlessly until today. The blow back function can’t perform a full cycle anymore, due to the gas chamber seal failure. The seal (KWA OEM part#: 38) seems not strong enough to handle the propane's pressure, but I assume they are the same stuff under well lubrications. After I dissemble the upper slide, I found several broken pieces of green chips that fell apart from the green chamber seal(picture attached).
Do you ever deal with this kind of problem, and do you have any good recommendation of replacements for this seal? The one can handle a certain pressure and temperature. It would be great if there are certain type of o-ring kinds from hardware store could replace it.

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Edited by Wolf9653, 25 March 2014 - 04:53 PM.

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