Caulking/sealant for pods.

Discussion in 'Boats, Motors, Trailers and Towing Rigs Forum' started by SteelyDan, Dec 19, 2017.

  1. SteelyDan

    SteelyDan Well-Known Member

    Hey guys, so I've had great success with 3m products and sikaflex above and below the waterline but can' find anything that will seal up the acces ports on an aluminum pod. Nothing seems to bond to plastic. I've scuffed up the plastic and wiped with grease wax and silicon remover. Sikaflex failed, 5200, 4200, 4000. All failed. Only thing I haven' tried is bedding with butyl which I will prob try next. I think there is just too much flexing in the decks on aluminum pods when people walk on them and under rough conditions and also the release agents used when moulding plastics. So anyone have any succes sealing these damn hatches up I'd love to know what you used. :confused:
    Captain PartyMarty likes this.
  2. SpringVelocity

    SpringVelocity Well-Known Member

    SteelyDan likes this.
  3. bigdogeh

    bigdogeh Well-Known Member

    Do you have a pic of the hatch? any way to add an O-ring to it? I've made up o-rings, using bulk o-ring material in the past, cut to length, crazy glue the ends, glue it onto the underside of the hatch and have had sucess... maybe the combination of the dow corning and a home-made O-ring around the edges would work...
    SteelyDan likes this.
  4. ryanb

    ryanb Active Member

    On l the jetboat I used to have there was a type of sealant used between the aluminum intake tunnel and uhmw plastic armor that was bolted on the bottom. It had a slightly rough/dry texture to it and was incredibly tough. I wish I could tell you what it was, but this is definitely the product you are looking for.
  5. profisher

    profisher Well-Known Member

    Do not use plastic inspection hatches on the pod...THEY LEAK!! I replaced mine as the pod would fill up in a month. I we t with an aluminum one I found at Trotac. Now I can go an entire summer in the water and maybe a couple litres comes out. Probably mostly condensation.
    SteelyDan likes this.
  6. mikep

    mikep Well-Known Member

  7. SteelyDan

    SteelyDan Well-Known Member

    Thanks I've read quite a bit recently about 995. Might be worth a shot, stuff is cheap and I can get it down the road from my place.
  8. SteelyDan

    SteelyDan Well-Known Member

    There just a pair of the standard tempress 4" thread in hatches. I like the seal idea. I could most likely find 4" seals.
  9. SteelyDan

    SteelyDan Well-Known Member

  10. SteelyDan

    SteelyDan Well-Known Member

    Was it custom made or can you remember the manufacturer?
  11. CIVANO

    CIVANO Well-Known Member

    I have the tempress as access plates in the floor of my fiberglass boat. I purchased new O rings from Tempress and they still leak.
  12. salmonkiller01

    salmonkiller01 Well-Known Member

    Second the Armstrong hatches, they seal 100%.
  13. profisher

    profisher Well-Known Member

    They were off the shelf...they had 2 sizes I bought the larger one. It has the mounting ring which has a gasket built in for the top to seal to. The top drops into place and uses a twisting latch to hold it down in place. Way better than a thread system. The plastic ones leak for the same reason the recalled fire extinguishers with the plastic valve bodies leak or fail to work. The plastic and metal expand and contract at different rates. I have the pod off my boat at the moment to have it re-powder coated. I pulled the hatch off, wire wheeled it clean and its good for another 20 yrs service. I apply a bit of grease to the gasket each spring to keep it from drying out.
  14. profisher

    profisher Well-Known Member

    Here are pics of the one I used.

    Attached Files:

    SteelyDan likes this.
  15. mikep

    mikep Well-Known Member

    They have been on our pod for 6 years and my dad's boat for as long. These are the solution. They have a huge oring that seals against the pods surface. These things work so well.
    Derby and Dogbreath like this.
  16. spring fever

    spring fever Well-Known Member

    I had a plastic (proper) inspection plate pop off completely 15 miles off Winter harbour. It had been in place with never a problem for 6 years. You never know!! The pod filled completely and all I lost was a knot or so and a little slower up on the plane. Still an epic moment! Once home I cut a piece of diamond coat aluminum- stainless screws and bedded with I think 3M 5200. Get a cup of water every 3 trips now-surveyor looked at it 4 weeks ago and laughed-he asked me if I had a plastic hatch pop? Guess it is fairly common. DUH!
  17. alex green

    alex green Member

    sikaflex and a aluminum plate with stainless screws will never leak
  18. wildthing

    wildthing Well-Known Member

  19. SteelyDan

    SteelyDan Well-Known Member

    Bunch of good info here guys. Thank you for all the input. I' going to install the two new 4" tempress deck plates I already have bedded with butyl tape. If they leak like that I'll use them as backing to center a hole saw and drill out for 6" Armstrong plates lol
  20. salmonkiller01

    salmonkiller01 Well-Known Member

    the way the armstrong hatches seal you may not have to enlarge the whole

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