KSC USP mag leak

[swatt13]

alright, im going to have to break down and ask for help again. both my mags (supplied and aftermarket) on my usp now leak. its not that big a deal as it is only the square oring around the fill chamber block. i HAVE tried removeing and soaking in silicone oil for several hours and that didnt remedy the problem. this only came to be when i started running coleman propane. never had teh problem on green gas, but now that it leaks, it doesnt matter whats in there: so im asking for one of two things;

a) any ideas on how to stop the leak as is (OR)

b) with what and how can i seal this block so it will not leak again (and if i do so, will it cause me any stress down the road if valves start leaking)

origionally i was just going to get some liquid gasket (that sealant paste stuff) spread a generous amount around the block and insert, but i thought before i do ill ask if its a good idea, or if theres a better idea.

[Amgoosen]

replace the standard o-ring with a much fatter one (you should have a hard time even getting it on there), and use alot more silicone oil with your propane.

[speedjunkiesracing]

I just got some clear non harding gasket maker from Can Tire. Put a lite coating on the oring and mag. Works great now.

[swatt13]

k well i removed the gasket, then i wrapped teflon tape around the seat of the seal, placed the gasket on over the teflon tape, then wrapped teflon tape around the gasket. so essentially i sandwiched the gasket between teflon tape. inserted the block into the mag, gased it up and voila, problem solved. quick and easy.

[Identity]

Originally Posted by swatt13

k well i removed the gasket, then i wrapped teflon tape around the seat of the seal, placed the gasket on over the teflon tape, then wrapped teflon tape around the gasket. so essentially i sandwiched the gasket between teflon tape. inserted the block into the mag, gased it up and voila, problem solved. quick and easy.

Glad you got that fixed. I simply replaced my o-ring and put cermaic greese on the oring and it works perfectly. However I havent fired mine in ages. All my GGB's are collecting dust... (ran out of propainnnnnnnn!)

[swatt13]

ohp, i lied, the thread tape didnt fix the problem, but it did do two things!!
1) made me think i soleved the leak by sealing it well enough i didnt notice untill i needed my gun (gased it up and let it sit for two days, figured it was all good, ddnt check it , went to pull the trigger...)
2) made it fucking rediculous hard to get the chamber block out, so DONT DO THE THREAD TAPE THING

what i did do, was removed the tape, placed a thin oring UNDERNEATH the supplied gasket spread a liberal amount of lubricone on the gasket and inserted. THAT solved the leak the extra oring made a tighter seal around the base and around the chamber lip.

dow type 55 oring lube will swell the oring slightly, might work, might not, worked on my usp.

[swatt13]

HA! thats egsactly what i use for everything. i picked it up when i use to play tourny paintball. but i didnt use it this time, but thanks jess, thats what ill use next time.