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10-23-2007, 08:43 AM
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Join Date: Jun 2005
Location: Milwaukee, WI area
Posts: 2,967
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Pipe tape on interior brake line fittings?
Do I need to pipe tape the threads on the AN fittings for my interior brake lines?
TIA...
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Chad Jensen
Astronics AES, Vertical Power
RV-7, 5 yr build, flew it 68 hours, sold it, miss it.
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10-23-2007, 08:45 AM
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Join Date: Oct 2007
Location: Galena,Indiana
Posts: 44
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No. I would not recommend that. Check AC 43.13
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10-23-2007, 08:54 AM
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Join Date: Jan 2005
Location: Louisville, Ga
Posts: 7,840
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Paste
Chad,
I would use Teflon based paste on all the pipe thread fittings, not on flared fittings. I don't see either tape or paste where your tee goes through the firewall into the reservoir. I used to use tape but pieces can break off and get in fuel/oil lines, etc, so now it's paste.
Regards,
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Pierre Smith
RV-10, 510 TT
RV6A (Sojourner) 180 HP, Catto 3 Bl (502Hrs), gone...and already missed
Air Tractor AT 502B PT 6-15 Sold
Air Tractor 402 PT-6-20 Sold
EAA Flight Advisor/CFI/Tech Counselor
Louisville, Ga
It's never skill or craftsmanship that completes airplanes, it's the will to do so,
Patrick Kenny, EAA 275132
Dues gladly paid!
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10-23-2007, 08:59 AM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,762
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Do not use anything on the flare fittings. It's the flare that seals, not the threads. Use a thread sealant on the pipe threads.
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Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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10-23-2007, 09:02 AM
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Join Date: Jan 2005
Location: Central California
Posts: 388
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Quote:
Originally Posted by cjensen
Do I need to pipe tape the threads on the AN fittings for my interior brake lines?
TIA... |
Chad,
AN 37? fittings were specifically designed to eliminate the need for sealants. If you have a problem, (that is a damaged fitting), Earls sells a specific conical repair washer. You shouldn't need, or use for that matter, a sealant on any of those fittings. I have done lots of break systems and never had the slightest trouble.
Bill Jepson |
10-23-2007, 09:43 AM
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Join Date: Jan 2005
Posts: 3,642
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Chad-
I understand that Bakerseal is a good, teflon-based sealant for the NPT threads. It is what I used. As above, only the NPT threads use it, not the flared fittings. As always, no teflon tape.
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Steve M.
Ellensburg WA
RV-9 Flying, 0-320, Catto
Donation reminder: Jan. 2021
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10-23-2007, 10:17 AM
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Join Date: Jun 2005
Location: Milwaukee, WI area
Posts: 2,967
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Thanks guys! I'll grab some sealant from work, and put some on the NPT threads. There is nothing on them right now, they are just fitted.
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Chad Jensen
Astronics AES, Vertical Power
RV-7, 5 yr build, flew it 68 hours, sold it, miss it.
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10-23-2007, 10:58 AM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,408
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Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010 
Phase 1 done, 2/4/2011
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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10-23-2007, 02:24 PM
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Join Date: Jun 2006
Location: Castaic, CA
Posts: 549
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Quote:
Originally Posted by Mike S
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Or 567. Its all we use at work for water, fuel, and oil systems on NPT threads. It is also an excelent anti sieze for stainless on stainless fittings.
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Mike Sumner
Castaic, Ca
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10-23-2007, 03:46 PM
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Join Date: Oct 2007
Location: NY
Posts: 323
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Questionable
Questionable......
The flaired fitting does not need anything.....
The pipe thread however, well that's another story. Just MAKE SURE the manufacturer says that it is intended for a particular use. I have used the paste on fuel fittings and they leaked. Actually the paste broke down.
I put Teflon paste, Teflon tape, some brown plumbing stuff a plumber said was great, and rtv in a flat pan and filled it with 100LL. The Teflon tape was the only thing that held up for a day.....the rtv was good, the others ran.
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