Page 1 of 2 12 LastLast
Results 1 to 10 of 11
  1. #1
    Join Date
    Jul 2012
    Location
    NW England
    Posts
    417

    Any suggestions for petrol proof sealant?

    Hi all.

    I've just had a new aluminium fuel tank made and I've included a couple of inspection hatches on the top which bolt on. I'm sealing the cover against the flange with gaskets but am also thinking of putting some sealant on the bolt threads (which go into the tank) to prevent any fumes escaping (I really want to have a boot which does not stink of fuel). Can anyone suggest a sealant which will not be disolved by petrol.

    Thanks in advance.

  2. #2
    Join Date
    Apr 2004
    Location
    East Leake, Nottinghamshire, England.
    Age
    55
    Posts
    9,501
    I used something like this on my fuel tank from the aviation industry. This was over 10 years ago now and I have had the lid on and off quite a few times without any problems and not a trace of petrol smell in my boot. I didn't put anything on the bolt threads though.
    Martin

    351W 416.7 HP and 466.8 ft-lbs

    Running Mega Squirt and Edis 8


  3. #3
    Join Date
    Dec 2001
    Location
    Cherval, France
    Age
    60
    Posts
    1,681
    Hylomar Universal Blue is supposed to be fuel resistant as well as being non-setting, for when you eventually want to remove it !

  4. #4
    Join Date
    Apr 2014
    Location
    Stourport on Severn
    Age
    61
    Posts
    242
    Another vote for Hylomar
    Cheers
    Steve

    My missus asked me to build her a Cobra! – How good is that!

    AK Gen2 chassis arrived 12/2/15 IVA Passed 2/7/18 on road 29/7/18
    http://stevesakcobrabuild.blogspot.com

  5. #5
    Join Date
    Jan 2002
    Location
    Woodham, Surrey, UK.
    Posts
    534
    Adams Aviation are good at that sort of stuff -
    https://www.adamsaviation.com/oils-p...sive?qfs=1&p=6

    B

  6. #6
    Join Date
    Jul 2012
    Location
    NW England
    Posts
    417
    Thanks guys.
    I'm not too enthused by Hylomar mainly because it doesn't set, bit worried about it getting into the fuel. Bear in mind I'm sealing the panels with gaskets (viton) the sealant is just for the threads.

    Cheers Bernie, I was thinking of aviation sealant and was going to ask a mate of mine from the old days (when I used to be an engineer) about it as he still works in the industry.

  7. #7
    Join Date
    Feb 2011
    Location
    Northampton
    Age
    41
    Posts
    3,899
    Loctite 577 Thread Sealant should do you - resistant to fuel (including ethanol), oil, etc and available everywhere*

    *well, lots of places, but probably not Halfords.
    My DeDion build diary..
    Hon Sec of the Digidash branch of the Unpopular Kit Car Design club

  8. #8
    Join Date
    Jul 2012
    Location
    NW England
    Posts
    417
    Quote Originally Posted by aaronjb View Post
    Loctite 577 Thread Sealant should do you - resistant to fuel (including ethanol), oil, etc and available everywhere*

    *well, lots of places, but probably not Halfords.
    Cheers Aaron, sounds like a good solution, will help keep bolts from loosening too.

  9. #9
    Join Date
    Aug 2016
    Location
    WELLINGBOROUGH
    Posts
    98
    Be a little bit careful about Loctite.
    If you need to undo the bolts again check whether or not the Loctite is the setting type.
    I hate the stuff (based on a lifetime of spannering).
    A good sealant would seem the best solution

    sceptic

  10. #10
    Join Date
    Dec 2008
    Location
    Shropshire
    Posts
    1,232
    I've used this stuff for years and it has never let me down.
    https://www.frost.co.uk/brake-pipe-seal-75ml.html
    It doesn't go solid like loctite.
    If you search brake pipe sealant in Google there is a Sealey alternative that Amazon sell that looks a little cheaper with free shipping. Not used that variant as the one from Frosts has lasted me some 15 years and still works perfectly out of the applicator. Excellent for fuel, air pipe and brake pipes as a thread sealer and thread retainer.
    Stu
    _________________________________________
    Hawk 289 Powered by a FORD 289
    My Gallery http://www.cobraclub.com/gallery/sho...wk-289/cat/500

Page 1 of 2 12 LastLast

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •