cliffy Posted June 18, 2019 Report Posted June 18, 2019 Years ago there was a tank seal system that relied on a slight vacuum ( 1/2 psi IIRC) and a red fluid was introduced by syringe drop by drop to the outside of the leaking rivets and it dried in the hole to seal the leak. The red fluid was suspected to be red locktite fluid. Anyone know what ever happened to that system?
MB65E Posted June 18, 2019 Report Posted June 18, 2019 Aerotrim used to sell the stuff I believe. -Matt
carusoam Posted June 18, 2019 Report Posted June 18, 2019 http://www.aerotriminc.com/id55.html There were a few things that aero trim had... But I don’t see it listed on their site. I have old fuzzy memories recalling the sealing of leaky rivets possibly using a large syringe for delivery, but haven’t seen anything other than typical sealants in the last decade... PP thoughts only, not a mechanic... Best regards, -a-
Jerry 5TJ Posted June 18, 2019 Report Posted June 18, 2019 “The Mooney Miser” offered a tank seal system for slight leaks, leaks at the stain-only severity. He sold a Loctite type adhesive. His instructions said to pull a slight vacuum (about 5” of water, not Hg!) on an empty fuel tank and apply his materials to the outside of the tank in the area of the staining. Theory was the vacuum would suck the adhesive into the leaking area and it would stick there, plugging the seep. 1
takair Posted June 18, 2019 Report Posted June 18, 2019 It was a good idea for minor leaks if you knew where the leak was. It was hit or miss for leaks where the fuel migrated and it was not a distinct spot. I tried it on my wing root leak at the time and couldn’t nail down the spot. I imagine it would have worked well on a rivet leak. I suspect there are alternate methods to achieve the same, but he had an STC on the kit...
Awful_Charlie Posted June 18, 2019 Report Posted June 18, 2019 I expect the red stuff was PR1005 "sloshing sealant"
Shadrach Posted June 18, 2019 Report Posted June 18, 2019 (edited) 1 hour ago, Awful_Charlie said: I expect the red stuff was PR1005 "sloshing sealant" It is not. PR1005 is way too viscous for this application (it’s like working with thinned out snot). The product in question is called Aeroseal and is STC’d. Aeroseal is a Cyanoacrylate (think loc-tite or super glue) that cures rapidly in the absence of oxygen (anaerobic). It supposedly is drawn in to the void where a leak occurs and then sets sealing said void. Don’t know if it is still available. The inventor went west about a decade ago but someone is still hosting the site. http://www.aerotriminc.com/id2.html Edited June 18, 2019 by Shadrach
Shadrach Posted June 18, 2019 Report Posted June 18, 2019 I’ve always wondered how this stuff would fair on weaping fuel tank screws. https://www.vibra-tite.com/threadlockers/removable-reusable-threadlockers/vibra-tite-vc-3-threadmate/?gclid=EAIaIQobChMIwsO_7pPz4gIVRSSGCh0KwgGBEAAYASAAEgKPQ_D_BwE
LANCECASPER Posted June 18, 2019 Report Posted June 18, 2019 17 minutes ago, Shadrach said: Don’t know if it is still available. The inventor went west about a decade ago but someone is still hosting the site. http://www.aerotriminc.com/id2.html I think it's his daughter who still handles the website and the products her dad introduced.
Yetti Posted June 18, 2019 Report Posted June 18, 2019 1 hour ago, Shadrach said: I’ve always wondered how this stuff would fair on weaping fuel tank screws. https://www.vibra-tite.com/threadlockers/removable-reusable-threadlockers/vibra-tite-vc-3-threadmate/?gclid=EAIaIQobChMIwsO_7pPz4gIVRSSGCh0KwgGBEAAYASAAEgKPQ_D_BwE Or just use the thing that is used on engines for screws/bolts that is known to be hydrocarbon repellent. Permatex 3 which is also aviation specific.
Shadrach Posted June 18, 2019 Report Posted June 18, 2019 35 minutes ago, Yetti said: Or just use the thing that is used on engines for screws/bolts that is known to be hydrocarbon repellent. Permatex 3 which is also aviation specific. I have some permatex 3 I’m not sure how flexible it is once cured.
Yetti Posted June 18, 2019 Report Posted June 18, 2019 1 hour ago, Shadrach said: I have some permatex 3 I’m not sure how flexible it is once cured. It stays semi flexible.
Andy95W Posted June 18, 2019 Report Posted June 18, 2019 Don Maxwell says to use Permatex #3 on the screws, FWIW. 2
mike_elliott Posted June 18, 2019 Report Posted June 18, 2019 6 hours ago, Shadrach said: It is not. PR1005 is way too viscous for this application (it’s like working with thinned out snot). The product in question is called Aeroseal and is STC’d. Aeroseal is a Cyanoacrylate (think loc-tite or super glue) that cures rapidly in the absence of oxygen (anaerobic). It supposedly is drawn in to the void where a leak occurs and then sets sealing said void. Don’t know if it is still available. The inventor went west about a decade ago but someone is still hosting the site. http://www.aerotriminc.com/id2.html Rumor has it Norm repackaged Loctite 290 as Aeroseal, but who am I to know. 1
Shadrach Posted June 18, 2019 Report Posted June 18, 2019 1 hour ago, mike_elliott said: Rumor has it Norm repackaged Loctite 290 as Aeroseal, but who am I to know. I always wondered what he was using. I had heard rumors that it was an off the shelf item, but never knew which.
cliffy Posted June 19, 2019 Author Report Posted June 19, 2019 So, my memory ain't too bad yet, huh? Had a hangar neighbor who used it on his E model and it worked for him.
81X Posted June 19, 2019 Report Posted June 19, 2019 17 hours ago, Andy95W said: Don Maxwell says to use Permatex #3 on the screws, FWIW. I had a leaking screw on the wing walk stiffener/brace and Permatex 3 aviation fixed that really quick.
FlyingDude Posted June 12, 2021 Report Posted June 12, 2021 Can permatex 3 and loctite 290 be easily removed like the rest of the prc glue when it's time for a complete reseal?
MooneyMitch Posted June 12, 2021 Report Posted June 12, 2021 Yep, the always entertaining and humorous Norm Smith, aka “Mooney Miser”. I had success years ago with Aeroseal on some minor tank leaks on my former F model. 1 1
EricJ Posted June 12, 2021 Report Posted June 12, 2021 23 minutes ago, FlyingDude said: Can permatex 3 and loctite 290 be easily removed like the rest of the prc glue when it's time for a complete reseal? Permatex 3 can. It's one of those things that never really hardens. 1
N201MKTurbo Posted June 12, 2021 Report Posted June 12, 2021 1 hour ago, FlyingDude said: Can permatex 3 and loctite 290 be easily removed like the rest of the prc glue when it's time for a complete reseal? Most Permatex products will dissolve in denatured alcohol. 1
N201MKTurbo Posted June 12, 2021 Report Posted June 12, 2021 (edited) 1 hour ago, FlyingDude said: Can permatex 3 and loctite 290 be easily removed like the rest of the prc glue when it's time for a complete reseal? 80019.pdf 290-EN.pdf Loctite Corporation-30769_235018-TDS_VD.pdf Edited June 12, 2021 by N201MKTurbo 1
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