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10-22-2008, 08:15 AM
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Join Date: May 2007
Location: newnan.ga
Posts: 426
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Fuel tank drain - sealant or not?
I'm about to leak test my first tank.
Should I use:
a) ProSeal
b) Teflon Tape
c) Nothing at all
d) Other
to install the drain fitting? It is NPT, correct? I'm betting that the Teflon tape is a bad idea...
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10-22-2008, 08:21 AM
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Join Date: Jan 2007
Location: Battleground
Posts: 4,342
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Fuel Lube
You will be taking them in and out quite a bit to drain tanks for sensor calibration and other fuel system checks. Threads are self sealing so you just need to lubricate them.
__________________
Smart People do Stupid things all the time. I know, I've seen me do'em.
RV6 - Builder/Flying
Bucker Jungmann
Fiat G.46 -(restoration in progress, if I have enough life left in me)
RV1 - Proud Pilot.
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10-22-2008, 08:21 AM
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Join Date: Jul 2005
Location: North Atlanta
Posts: 1,120
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Sid Lambert
RV-7 Sold
RV-4 - Flying - O-320 Fixed Pitch - Red over Yellow
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10-22-2008, 08:25 AM
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Join Date: Oct 2007
Location: Nashville, TN
Posts: 229
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Nothing permenant
You will probably be OK with nothing for the test. If anything I would use a dab of FUEL Lube. Proseal wold make it difficult for removal later, and that will happen some time in its life.
While testing you may have an issue with the cap leaking. My solution was to get a pipe plug from the plumbing department.(Home Depot) The kind that resembles a thermos bottle plug.
Good luck with the test.
Randy Hooper
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10-22-2008, 08:26 AM
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Join Date: Apr 2007
Location: Cleveland Ga. (0GE5)
Posts: 123
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Use a anti- seize agent . Fuel Lube available from ACS will work fine.
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"Miss-Jessi"
RV-8 N231AH
Allen Holcombe VAF962
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10-22-2008, 08:28 AM
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Join Date: Jan 2005
Location: Mtns of N.E. Georgia
Posts: 1,322
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Seal
Quote:
Originally Posted by Sid Lambert
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I agree with Sid. This product will help prevent thread galling if you ever have to remove the drains to replace the "O" rings.
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LAUS DEO
Mannan J.Thomason, MSGT. USAF (RET)
VAF788 
"Bucket List" checkoff in progress!
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10-22-2008, 08:36 AM
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Join Date: Jan 2005
Location: Martinsville, IN
Posts: 2,344
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Do not let teflon tape get anywhere near your fuel system. All it takes is one small piece to tear off and it will clog something important.
On all my plumbing fittings, I use a small dab of Form-a-gasket on the threads. It lubricates then seals. Once it hardens, it will break off when you turn the fitting.
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Randy Pflanzer
Greenwood, IN
www.pflanzer-aviation.com
Paid through 2043!
Lund fishing Boat, 2017, GONE FISHING
RV-12 - Completed 2014, Sold
427 Shelby Cobra - Completed 2012, Sold
F1 EVO - partially completed, Sold
F1 Rocket - Completed 2005, Sold
RV-7A - Partially completed, Sold
RV-6 - Completed 2000, Sold
Long-EZ - Completed 1987, Sold
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10-22-2008, 11:58 AM
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Join Date: May 2007
Location: newnan.ga
Posts: 426
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Thanks guys. I picked up some EZ Turn at Spruce yesterday when I was getting all my stuff together for the leak test - I knew I'd be using it on the fuel cap.
Randy - If I can't get the cap to seal, I know exactly what you're talking about and will get that.
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