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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.


#2 PinoyCanadian

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Posted 21 September 2014 - 01:02 PM

I had the same problem, but I changed mine with a simple o-ring and now I'm having problems with the cycle too. Any luck on yours? I'll look online for a replacement.


#3 Chuck S

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Posted 22 September 2014 - 02:31 AM

Replace and lubricate the OEM seal.  Green gas is primarilly propane and pressure differences are inconsequential.

http://store.kwausa....45MainSeal.aspx

-- Chuck

#4 PinoyCanadian

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Posted 22 September 2014 - 10:40 AM

View PostChuck S, on 22 September 2014 - 02:31 AM, said:

Replace and lubricate the OEM seal.  Green gas is primarilly propane and pressure differences are inconsequential.

http://store.kwausa....45MainSeal.aspx

-- Chuck

I'd love to but I don't see any shipping options to Canada.

#5 Chuck S

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Posted 22 September 2014 - 04:02 PM

I'm sure USPS delivers to the Great White North -- assuming it's not iced over yet!  :)

-- Chuck





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