A relative uses an inflatable plastic seat cushion, and it has a leak. I
was able to localize the leak to a particular plastic seam but taping this
did not repair the leak. Can someone recommend an appropriate material /
glue to fix this sort of thing?
I repair holes in our plastic pool floats with clear silicone caulk. It
works well in locations where a patch would be ineffective, like seams,
or around air valves. I still have pool floats that have had holes
patched with silicone caulk 3 or 4 years ago. I used to patch holes in
the water bags that held down the winter pool cover, but I switched to
the spring loaded mesh type cover two years ago.
"There are so many kinds of plastic its hard to give advice
here that applies to them all. If possible try a small
test in an area that doesn't show."
The size of the user MAY also be a factor. Think wax toilet gaskets that
I have successfully used a product called Aquaseal to seal up holes in
waterbeds (full of water!), wetsuits, and even the inflatable bladders
of buoyancy compensators (the flotation devices used by scuba divers).
It has the consistency and appearance of model airplane glue. Smells
like model airplane cement too. Curing takes about 12 hours, IIRC.
There is a second product that you can use with the Aquaseal if you want
to speed up curing to less than 2 hours: Cotol 240.
You should be able to find both products in any scuba shop or you can
get it from the manufacturer's links.
I believe Aquaseal can solve your problem for you. You can use it
either as an adhesive on the seam or to form a new skin directly over a
small hole.... which is how I fixed my leaking waterbed.... no steenking
patches for me! It's good stuff.
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