Sealant

Discussion in 'Boat Tips' started by Wabash River Bear, Apr 10, 2008.

  1. Wabash River Bear

    Wabash River Bear New Member

    Messages:
    3,019
    State:
    Indiana
    What is the absolute best sealer that can be used on aluminum and plastic? I need to reseal the plastic mounting plate for my transducers to my aluminum hull. The bath & shower silicone I bought at Lowes aint doin the job. Thanks all.
     
  2. Big Dav

    Big Dav New Member

    Messages:
    1,016
    State:
    Southwest
    3m 5200. Only problem is it takes 7 days to dry.:big_smile:
     

  3. biga

    biga Well-Known Member

    Messages:
    2,111
    State:
    evansville
    dont be a sissy...... screw it on lol :smile2::wink:
     
  4. Wabash River Bear

    Wabash River Bear New Member

    Messages:
    3,019
    State:
    Indiana
    Thanks Dave, I did a quick google search, they have a "quick cure 5200" out now. Tack free in an hour, fully cured in 24 hrs.
     
  5. flounderman

    flounderman New Member

    Messages:
    26
    State:
    Blaine, Washington
    3M does make a 5200 fast cure --24 hrs. rough up the aluminum, clean with acetone-- but sticking to a smooth plastic is still iffy, scratch up the plastic.
     
  6. Wabash River Bear

    Wabash River Bear New Member

    Messages:
    3,019
    State:
    Indiana
    Well Adam, I just wasnt sure if 4- 1/2" bolts would be enuff to keep it on there, transducers are xpensive ya know. :smile2: I used one of those 3x9" plastic mounting plates so I only had 2 screws thru the hull instead of 5. the cheap silicone I used is letting water seep around a screw.
     
  7. badkarma

    badkarma New Member

    Messages:
    772
    State:
    Oxford,Miss
    Bear I've used a marine grade polyester sealant many times and never had any problems.