67 Hartop- What's this sealer

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  • Gerard F.
    Extremely Frequent Poster
    • July 1, 2004
    • 3803

    67 Hartop- What's this sealer

    Looking for an uptodate sealer, to replace this original stuff:



    This is the mastic sealer which goes between trim and the frame of the hardtop above and in back of the side window and to the rear window. It is kind of a black mastic, still a little soft after all these years. You can see the part number of the trim embedded in it.

    The Dow Smith Assembly manual (thanks Harry) for the hardtop refers to it as Sealer 3840733. The 67 Chassis Service Manual refers to it as a "polyurethane sealer obtained through Chevrolet Parts sources" but the picture showing it being applied shows it as white.

    Anyone know of a current day substitute for this stuff?
    Attached Files
    Last edited by Gerard F.; November 13, 2010, 12:06 AM.
    Jerry Fuccillo
    1967 327/300 Convertible since 1968
  • Douglas L.
    Very Frequent User
    • September 1, 2003
    • 299

    #2
    Re: 67 Hartop- What's this sealer

    Jerry,

    I used black 3M Strip Caulk

    Comment

    • Dennis C.
      Very Frequent User
      • July 1, 2002
      • 881

      #3
      Re: 67 Hartop- What's this sealer

      Jerry,

      3M makes a non-hardingbedding compound that might work. I believe the number is 8509.

      Dennis

      Comment

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