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11-22-2016, 08:43 AM
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Join Date: Nov 2012
Location: Midland, mi
Posts: 962
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Pipe thread sealant Question
Is there any particular pipe thread sealant to use between the fuel filter and the fuel pump?
Loctite 567?
thanks
ken
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Ken Stockman
Midland, MI
EAA Chapter 1093 member
FaceBook Page: Ken's RV-14
RV-14a (serial number 140073)
N73XP
Plane at hangar and the wings ON.
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11-22-2016, 06:16 PM
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Join Date: Dec 2013
Location: Baton Rouge, LA
Posts: 1,048
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I used Permatex #2 just like used for the fuel tank drain....
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Ser 104142, RV-14A flying - N1463 
Ser 83825, RV-8 building - N8638? 
USN Ret, Urologist, AME, Repeat Offender
https://www.atkinsonurology.com
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11-23-2016, 06:16 AM
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Join Date: Aug 2014
Location: Victoria, Tx
Posts: 418
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Loctite 567 is a good product as long as you give it time to cure.
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11-23-2016, 06:52 AM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,515
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#2 or my favorite (for 4 decades) , Aviation #3
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Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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11-23-2016, 12:18 PM
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Join Date: Mar 2014
Location: Laguna Hills, CA
Posts: 1,805
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Quote:
Originally Posted by 219PB
Loctite 567 is a good product as long as you give it time to cure.
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Great stuff! It's an anaerobic cure, so the stuff that squishes out past the threads is always going to be a little gooey. I try to wipe off the excess as much as possible.
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Doug
RV-9A "slider"
Flew to Osh in 2017, 2018 & 2019! 
Tail number N427DK
Donation made for 2020
You haven't seen a tree until you've seen its shadow from the sky -- Amelia Earhart
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11-23-2016, 07:49 PM
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Join Date: Mar 2005
Location: Huntsville, AL
Posts: 426
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Leaks
I used Perm #2 at first. Then I disassembled, cleaned, and reassembled all fuel and brake lines with Locktite 567 to stop the leaks.
__________________
Dave
RV12 N951DZ
First Flight 9/23/16!
No paint yet. Working on a scheme with John Deere colors or accents.
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11-23-2016, 10:49 PM
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Join Date: Dec 2013
Location: Baton Rouge, LA
Posts: 1,048
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Just out of curiosity, what did you use or do to clean the threads when you changed the sealant?
__________________
Ser 104142, RV-14A flying - N1463 
Ser 83825, RV-8 building - N8638? 
USN Ret, Urologist, AME, Repeat Offender
https://www.atkinsonurology.com
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11-23-2016, 11:53 PM
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Join Date: Nov 2011
Location: Albany, OR
Posts: 145
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Pipe Thread Sealant
Napa India Head Gasket Shellac. Works like a charm - after 1.5 years of fighting Brake line "weeps" and a couple of fuel line leaks. Just don't get the shellac on the mating surfaces of the fittings or inside the pipe end.
Let the fittings set for 24 hours before introducing brake fluid or fuel (as appropriate) to the line.
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11-24-2016, 04:53 AM
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Join Date: Aug 2016
Location: Asheville, NC
Posts: 2,092
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Pneumatic and Hydraulic Sealant
I use Pneumatic and Hydraulic Sealant everywhere except fuel lines. I don't know if it's compatible with fuel, but it works great on brake and hydraulic lines. It's like Loctite and is what heavy equipment manufacturers use on their bulldozers and track hoes.
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(2020 dues paid)
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11-24-2016, 07:37 AM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,515
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Quote:
Originally Posted by JDA_BTR
Just out of curiosity, what did you use or do to clean the threads when you changed the sealant?
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Permatex #2 and #3 are removable with alcohol. Isopropyl or denatured ethanol. Nothing petroleum will touch it.
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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