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skills@eurocarsplus
Samba Peckerhead
Joined: January 01, 2007
Posts: 16879
Location: sticksville, ct.
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 Posted: Thu Jul 03, 2014 8:52 pm Post subject: best sealant for fuel lines |
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as the title states, i was looking for something to seal some threads on the new outlet on my fuel tank.
i tapped the center of the outlet bung to accept a brass 5/16 (outlet) fitting. the problem is, i want to be able to remove it if needed, and i can't install it with the fitting screwed into the tank (going into a bus)
none of the permatex stuff i have found seems to be rated for gas
http://www.neverseezproducts.com/threadseal.htm
so, what have you guys used? really want to stay away from teflon tape if i can
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| gprudenciop wrote: |
my reason for switching to subaru is my german car was turning chinese so i said fuck it and went japanese....... |
| Jake Raby wrote: |
| Thanks for the correction. I used to be a nice guy, then I ruined it by exposing myself to the public. |
| Brian wrote: |
| Also the fact that people are agreeing with Skills, it's a turn of events for samba history |
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74 Thing
Samba Member
Joined: September 02, 2004
Posts: 7393
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| Posted: Thu Jul 03, 2014 9:27 pm Post subject: |
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| I used blue loctite before, but I also never took off the fitting afterwards. No leaks though! |
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FreeBug
Samba Member
Joined: March 12, 2012
Posts: 4278
Location: deepest, darkest Switzerland
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| Posted: Thu Jul 03, 2014 11:56 pm Post subject: |
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| Gas is thin and slippery...you really want a positive seal with a fiber gasket or aluminum ring, or the like, im not sure thread sealant is the way to go. I may have misunderstood your question. |
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esde
Samba Member
Joined: October 20, 2007
Posts: 5969
Location: central rust belt
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| Posted: Fri Jul 04, 2014 12:37 am Post subject: |
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| Did you tap it with straight threads or tapered? If they're straight, can you bottom the fitting against a copper washer? If they are tapered I'd use the thick yellow teflon tape, though I know you say you don't want to. |
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Quokka42
Samba Member
Joined: December 02, 2010
Posts: 3117
Location: Melbourne, Australia
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| Posted: Fri Jul 04, 2014 1:58 am Post subject: |
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Blue loctite usually works well, and is rated for gas at the necessary level for fuel lines. When dealing with N/A street engines, that is - if you are running a "fuellie," or even a straight methanol racecar, there is a different product that I can't remember the number of, but look up Henkel, or call and ask for a recommendation. Loctite 243 will even seal most turbo fuel injection lines on "gas." (Oh, and it's fine with ethanol blends.)
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fastfil
Samba Member
Joined: November 25, 2006
Posts: 356
Location: Sunshine Coast, AUS
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| Posted: Fri Jul 04, 2014 3:29 am Post subject: |
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Stag sealant has worked well for me. It's safe for petrol and won't 'lock' when it dries out. I always use a tiny bead when re-using copper sump plug washers.
I'm fairly sure it is still around. My tube is 19yo and I can no longer stab a screwdriver in to a gooey bit... 
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skills@eurocarsplus
Samba Peckerhead
Joined: January 01, 2007
Posts: 16879
Location: sticksville, ct.
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| Posted: Fri Jul 04, 2014 5:48 am Post subject: |
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| esde wrote: |
| Did you tap it with straight threads or tapered? If they're straight, can you bottom the fitting against a copper washer? If they are tapered I'd use the thick yellow teflon tape, though I know you say you don't want to. |
tapered threads
| Quokka42 wrote: |
| Blue loctite usually works well, and is rated for gas at the necessary level for fuel lines. When dealing with N/A street engines, that is - if you are running a "fuellie," or even a straight methanol racecar, there is a different product that I can't remember the number of, but look up Henkel, or call and ask for a recommendation. Loctite 243 will even seal most turbo fuel injection lines on "gas." (Oh, and it's fine with ethanol blends.) |
i thought about using blue loctite. perhaps i will go this route. i have read that the yellow teflon tape falls apart, and i didn't want to run the risk of using it...
_________________
| gprudenciop wrote: |
my reason for switching to subaru is my german car was turning chinese so i said fuck it and went japanese....... |
| Jake Raby wrote: |
| Thanks for the correction. I used to be a nice guy, then I ruined it by exposing myself to the public. |
| Brian wrote: |
| Also the fact that people are agreeing with Skills, it's a turn of events for samba history |
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nobuggybob
Samba Member
Joined: October 31, 2008
Posts: 415
Location: Monument Co.
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| Posted: Fri Jul 04, 2014 6:07 am Post subject: |
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Gasola. It is used for threads when putting gas sta. pumps and piping together.
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Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20380
Location: Just a tiny bit west of Yosemite Valley
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| Posted: Fri Jul 04, 2014 8:31 am Post subject: |
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Teflon tape is a valid solution... However the bad part is getting onto fitting and getting fitting seated without shredding it....
Yellow or white tape same formula chemically so either will do....
How about plain old hardware store thread sealant... Recommended for almost any type of liquid or gaseous fuels including "gasoline"...
Pretty much thrown my rolls of Teflon tape in trash after finding this product (by brand) ...
Dale
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All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ... |
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bscriver
Samba Member
Joined: April 14, 2014
Posts: 4
Location: Cranbrook
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| Posted: Fri Jul 04, 2014 8:42 am Post subject: |
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| Ive had this problem on boats before. I always use loctite aviation gasket sealer. has never leaked on me yet. |
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ONEBADBUG
Samba Member
Joined: January 27, 2004
Posts: 183
Location: SPOKANE, WA
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| Posted: Fri Jul 04, 2014 9:21 am Post subject: |
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| bscriver wrote: |
| Ive had this problem on boats before. I always use loctite aviation gasket sealer. has never leaked on me yet. |
That stuff can be dissolved by alcohol, so... I would use liquid Teflon. |
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skills@eurocarsplus
Samba Peckerhead
Joined: January 01, 2007
Posts: 16879
Location: sticksville, ct.
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| Posted: Fri Jul 04, 2014 10:51 am Post subject: |
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| nobuggybob wrote: |
| Gasola. It is used for threads when putting gas sta. pumps and piping together. |
looks good to me
http://www.gasoila.com/products/pipe-thread-sealants/gasoila-e-seal-thread-sealant.html
| bscriver wrote: |
| Ive had this problem on boats before. I always use loctite aviation gasket sealer. has never leaked on me yet. |
i had read the same thing on a boat site before posting here. i would think that it would disolve over time
_________________
| gprudenciop wrote: |
my reason for switching to subaru is my german car was turning chinese so i said fuck it and went japanese....... |
| Jake Raby wrote: |
| Thanks for the correction. I used to be a nice guy, then I ruined it by exposing myself to the public. |
| Brian wrote: |
| Also the fact that people are agreeing with Skills, it's a turn of events for samba history |
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nobuggybob
Samba Member
Joined: October 31, 2008
Posts: 415
Location: Monument Co.
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| Posted: Sat Jul 05, 2014 5:52 am Post subject: |
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Gasola Is all you need 
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Vee Dub Nut
Samba Member
Joined: April 25, 2004
Posts: 1184
Location: Dallas, GA
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x-file
Samba Member
Joined: March 11, 2012
Posts: 50
Location: Vic. Australia
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| Posted: Mon Jul 07, 2014 4:26 am Post subject: |
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Loctite 567 teflon thread sealant.
Instant results,and no problems. |
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 21520
Location: Oklahoma City
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| Posted: Mon Jul 07, 2014 7:47 am Post subject: |
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| Indian head works excellent for this. No issues with gasoline. Ray |
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fredn
Samba Member
Joined: May 27, 2010
Posts: 332
Location: Vancouver
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| Posted: Tue Jul 08, 2014 9:38 am Post subject: |
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This stuff is the best. It's on TV so it must be awesome. I use it on the old cracked rubber fuel lines over my exhaust.
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| tencentlife wrote: |
| ...most are doing what most auto forum participants do, parroting things they've heard |
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jpaull
Samba Member
Joined: February 22, 2005
Posts: 3466
Location: Paradise, Ca
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