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Thread: To use or not

  1. #1
    Join Date
    Jan 2007
    Posts
    93

    Default To use or not

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

    Pete

  2. #2
    Join Date
    Aug 2009
    Location
    chester, nj
    Posts
    364

    Default

    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

  3. #3
    Join Date
    Oct 2006
    Location
    Ridgefield CT
    Posts
    309

    Default

    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

  4. #4
    Join Date
    Jul 2007
    Location
    Augusta, GA
    Posts
    909

    Default

    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

  5. #5
    Join Date
    Apr 2008
    Location
    The Granite State (NH)
    Posts
    3,435

    Default

    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).

  6. #6
    Join Date
    Sep 2007
    Location
    Mystic CT,
    Posts
    583

    Default

    Quote Originally Posted by Pete View Post
    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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