To use or not

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  • Pete
    Low Range
    • Jan 2007
    • 93

    To use or not

    When reasembling items do you use: gasket, gasket and rtv sealent, or just rtv sealent (gasket maker)?

    Pete
  • kevkon
    3rd Gear
    • Aug 2009
    • 364

    #2
    That really depends on what the nature of the two mating surfaces in question are and their condition, what the gasket is made of and it's "crush" , and whether the seal is to be permanent. There are other choices besides RTV silicone, as well.
    Bottom line is that RTV silicone is a great product but it should only be used in the proper situations and very judiciously. Too many times I find this stuff where it absolutely doesn't belong.
    94 D-90 tdi
    72 Series III

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    • kevin-ct
      3rd Gear
      • Oct 2006
      • 309

      #3
      More RTV is not better...Less is more.
      Kevin

      04 XJ8
      92 RRC
      02 Benz E320

      95 RRC (sold 5/10)
      72 Series 3 (sold 4/10)
      70 Series 2A (sold 6/10)
      Morgan +8 (sold 8/09)
      90 Jetta (308k miles) (sold 5/11)
      72 Triumph Stag (sold 1/08

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      • thixon
        5th Gear
        • Jul 2007
        • 909

        #4
        personally, I'm much bigger fan of hylomar (blue non setting to be exact), rather than rtv. Worth the money IMO.
        Travis
        '66 IIa 88

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        • SafeAirOne
          Overdrive
          • Apr 2008
          • 3435

          #5
          If there is a paper gasket made for the part, I'll use it along with non-hardening gasket sealant (not RTV).
          --Mark

          1973 SIII 109 RHD 2.5NA Diesel

          0-54mph in just under 11.5 minutes
          (9.7 minutes now that she's a 3-door).

          Comment

          • rwollschlager
            5th Gear
            • Sep 2007
            • 583

            #6
            Originally posted by Pete
            When reasembling items do you use: gasket, gasket and rtv sealent, or just rtv sealent (gasket maker)?

            Pete
            x2 on the hylomar. It was recommended to me by Les and others at this years All Metal Dash Rally. It never fully hardens. Apply a light smear to both sides of the paper gasket and wipe off excess. I've heard if done correctly, you should be able to re-use your gaskets after they've been hylomar'ed (riverport rovers).

            I've heard the RTV for Ford has similar properties.

            -Rob
            ------------------------------------------------
            72 SIII 88
            67 SIIA 109
            82 SIII Stage 1 V8
            -- http://www.youtube.com/barnfind88 --

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