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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Q On Plumber's Tape & Thread Seal



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      04-23-2009, 08:33 AM   #1
hl0m4n
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Question Q On Plumber's Tape & Thread Seal

so i have some plumbers tape i bought from home depot in the garage somewhere, can it be used for automotive use?

i want to use it to thread the end of the hose line on the rr occ. im worried that this tape can't meet the high temperatures of the engine bay and can just give me nothing but problems?

any other automotive solutions to seal threads?
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      04-23-2009, 08:46 AM   #2
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Please NO!
Teflon tape should not be used with automotive where there is contact with oil or fuel.
I even have the thicker yellow tape but that is only used for natural gas.
This is why I used high temp silicone on the threads, screwed it on, and wiped off excess.
The only down side is you have to let it dry.
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      04-23-2009, 08:49 AM   #3
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Quote:
Originally Posted by Mr. 5 View Post
Please NO!
Teflon tape should not be used with automotive where there is contact with oil or fuel.
I even have the thicker yellow tape but that is only used for natural gas.
This is why I used high temp silicone on the threads, screwed it on, and wiped off excess.
The only down side is you have to let it dry.
was hoping you would reply to this thread... it seems like the oil leak from the rr occ is starting to become a common issue?

is the high temp silicone like glue? how long do you have to let it dry for? the silicone creates a nice permanent seal?
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      04-23-2009, 08:55 AM   #4
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Yeah go to autozone and get a tube of silicone to glob on those threads (or some locktite)
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      04-23-2009, 09:07 AM   #5
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There are a bunch of different types of RTV sealant here: http://www.acehardware.com/family/in...010&cp=1255100

Which is best to use?
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      04-23-2009, 09:13 AM   #6
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Quote:
Originally Posted by hl0m4n View Post
was hoping you would reply to this thread... it seems like the oil leak from the rr occ is starting to become a common issue?

is the high temp silicone like glue? how long do you have to let it dry for? the silicone creates a nice permanent seal?
I put on the silicone.
put the fittings together.
Wiped excess and let sit for a couple hours.

To be on the safe side, I also applied epoxy all around the circumference just to be 100% sure.

Now that I think about it, I bet the easiest thing to do is to take the fittings to home depot and get a rubber flat washer that fits inside.
Then once you tighten the connectors together there should be enough pressure on the rubber washer to stop the leak.
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      04-23-2009, 09:49 AM   #7
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thanks mr.5 and that rubber washer is brilliant . the rubber washer and silicone can still go together through right and 1 rubber wash is good enough per?
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      04-23-2009, 09:50 AM   #8
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Quote:
Originally Posted by hl0m4n View Post
thanks mr.5 and that rubber washer is brilliant . the rubber washer and silicone can still go together through right and 1 rubber wash is good enough per?
Please take some pics if you do this. Thanks.
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