Using RTV to make my own gasket

Discussion in 'Stove Forum' started by KWT, Nov 12, 2019.

  1. KWT United States

    Offline
    Joined:
    Nov 12, 2019
    Messages:
    1
    Location:
    Texas
    Hi

    I’d like to know has anyone tried to use RTV
    “ gasket maker “ to make his own gasket ??

    I have a primus 8r, svea 123 and a couple of stoves thinking of trying this method without making a mess

    i looked for couple of RTVs with high temp, but really not sure if it work for fuel cap gasket
     
  2. Tony Press

    Tony Press Australia Subscriber

    Offline
    Joined:
    Jun 8, 2013
    Messages:
    9,295
    Location:
    Stinkpot Bay, Howden, Tasmania, Australia
    @KWT

    I’m not sure what you mean by “RTV”, but if it’s silicon-based you might run into big problems with it disintegrating in contact with fuel.

    For “rubber” washers, viton is preferred as it is very stable with gasoline, kerosene and alcohol.

    Put some RTV in a jar of Coleman fuel for a few months and see what happens.

    I was given some “special” NRV pips a few moths ago. One week in Coleman fuel and it started to turn black.

    Cheers

    Tony
     
  3. pyro_P Australia

    Offline
    Joined:
    May 16, 2019
    Messages:
    121
    Location:
    Westraya
    I wouldn't recommend it (RTV) video is just one example of what can happen.
    In your case with a RTV cap gasket, potential of the same but different.
    If you want to skip to the action, 4.30 is where things heat up.
    Does laughing make one a bad person?
     
  4. cottage hill bill

    cottage hill bill SotM Winner Subscriber

    Offline
    Joined:
    Jan 8, 2011
    Messages:
    1,474
    @KWT The stove you mention are common stoves for which parts are readily available at reasonable costs. Why spend time and money trying to reinvent, in a poor manner, a wheel that is tested and reliable? You will spend more on a tube of RTV than the cost of overhaul kits for two or three stoves. If you've just got to do it yourself, buy one of the double hole punch sets and a sheet of viton and you'll never have to buy another gasket and the ones you make will work.
     
  5. dwarfnebula United States

    Offline
    Joined:
    Apr 23, 2012
    Messages:
    356
    Location:
    Colorado
    RTV gasket maker is very much soluble in gasoline. It will not work at all.
     
  6. snwcmpr

    snwcmpr SotM Winner Subscriber

    Offline
    Joined:
    Nov 16, 2011
    Messages:
    20,086
    Location:
    North Carolina
    My understanding of that use is for something that will not be taken apart without replacing the 'gasket'.
    With stove seals, they are reused every time you remove the cap.
     
  7. IvanN

    IvanN United States Subscriber

    Offline
    Joined:
    Jan 10, 2016
    Messages:
    2,739
    Location:
    N.E. Oregon
    I make my gaskets by calling The Fettlebox. :D/
     
  8. Harder D. Soerensen

    Harder D. Soerensen United States Subscriber

    Offline
    Joined:
    Oct 24, 2017
    Messages:
    2,092
    Location:
    Denmark
    @Tony Press: Good advice regarding testing it in CF prior to using.

    +1 on @IvanN
     
  9. Jim Lukowski United States

    Offline
    Joined:
    Jul 13, 2015
    Messages:
    415
    Location:
    New Jersey, USA
    @KWT
    I see that you're in the US. If you don't have enough needed parts to justify the overseas shipping cost, Coleman 1-piece fuel cap gaskets fit the fuel caps of those stoves. They're a buck each at OldColemanParts.com He'll refund some of the shipping if it's a small/light order.

    @pyro_P
    >>Does laughing make one a bad person?

    I hope not. I too laughed at that video. Perhaps because I've had my own incident with invisible alcohol flames. At least I was outdoors at the time.
     
  10. Ronzo

    Offline
    Joined:
    Jan 28, 2015
    Messages:
    23
    Location:
    Connecticut
    Forum;

    RTV is a generic term for Room Temperature Vulcanizer...of which there are many different types...the typical Dow-Corning 732 is definitely not hydrocarbon compatible, but I recall from my time in the aerospace field, that D-C 730 (fluorosilicon) was used for sealing when in contact with jet fuel...of course, cutting one of sheet viton will do it too...

    Cheers
     
  11. monkeyboy

    Offline
    Joined:
    Mar 7, 2010
    Messages:
    565
    Location:
    Norte Mudzoory
    learned that same thing on a smaller scale. you only have to do it once.

    buzz