How to glue polypropolene
Douglas Patton
I've got an old roll away blackwater tank whose threaded opening I'm trying
to retrofit to accept a standard dump hose. The tank is polypropolene and
the adapter nipple is black ABS plastic. The nipple fits snugly in the tank
dump opening, but the ABS glue I used isn't taking to the polypropolene.
Does anyone know what I could use to glue or otherwise secure these pieces
together? Thanks for any help!
-Doug Patton
Ausirion
strips. It takes about 3 to 4 days to dry properly, but it will stick those
two components together leak free. If you can give it a week to dry, all the
better. Just put the mastic on and leave it in a warm place for a week.
There is no other product that I know that will glue those two different
types of plastic together.
--
boll...@hotmail.com
"Douglas Patton" <dw...@hotmail.com> wrote in message
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Hugh
Doug, are you sure the newer sewer fitting won't work? The
one with different size threads? I think it's Camper World
part #5723 E-Z coupler. That's an adapter for Valterra. Then
there is part#1615 universal sewer elbow. I've got a fitting
someone left at a campsite and it has several thread sizes.
It looks like part#17529, the threaded elbow part. The 5723
E-Z coupler threaded adapter has 3 different sizes.
Just a thought.
hugh
Bu...@trailertrash.com
make sure before you do it that you never want to take it apart again.
"Douglas Patton" <dw...@hotmail.com> wrote in message
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Douglas Patton
stuck with gluing.
I'm willing to mate the pieces permanently - I take it 5200 silicone is
beefier than your regular silcone caulking? -Doug
<Bu...@TrailerTrash.com> wrote in message
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Douglas Patton
Not sure what this is - is it like an adhesive strip? Best place to look
for it?
> better. Just put the mastic on and leave it in a warm place for a week.
I live in Phoenix, so that shouldn't be a problem! -Doug
Duncan Douglas
but I understand that it isn't (wasn't) possible to get a true glue
"bond" to polypropylene. I have heard that "welding"(with special
equipment) will work well. Also you may be able to get a very, very
good seal with an "O"-ring face seal onto the polypro. But "glue"? I
really don't think so.
Ummmm, I just called US Plastics (usplastic.com or 800-537-9724) and a
tech specialist there confirmed what I said above. You just can't glue
the stuff. Welding is the only real "bonding" solution, and that's
that.. A welding setup may run from $280.00 on up.
Duncan Douglas
dun...@optonline.net
Chris Bryant
>he tank is so old that the threading is starting to crumble, so I think I'm
>stuck with gluing.
>I'm willing to mate the pieces permanently - I take it 5200 silicone is
>beefier than your regular silcone caulking? -Doug
I would probably try using 5200 (which is a poly urethane- not
silicone), but I would use the original type fitting- liberally apply
the sealant to the old threads, and screw the fitting on. The trouble
with this is if it doesn't work, you have a major mess,
The other way I attach fitting to poly tanks is by using dump
valve "adapters"- these have a large square flange with holes in it. I
use "well nuts" (rubber encapsulated nuts where the rubber will expand
and seal the hole) to physically attach the adapter to the tank, and
use silicone symply as a gasket material between the adapter and the
tank. So far I have had this work for many years- but this was for
gray water tanks, not sewage.
--
Chris Bryant
Bryant RV Services- http://www.bryantrv.com
On RVing-RV TV about RVs, by RVers: http://www.onrving.com
Harvey Arkawy
bond the two pieces together. Use in a VERY well ventilated area.
I hope this helps.
Harvey
Duncan Douglas <dun...@optonline.net> wrote in message news:<3BB32B81...@optonline.net>...
Douglas Patton
paid $10 for the tank.
I have some stuff called "plastic welder" - applies in dual tube form like
epoxy. I'm going to try routing out grooves in the mating surfaces so the
glue forms a ring and see if that works. If it falls apart I may just go
get a new tank!
-Doug
"Chris Bryant" <bryan...@cfl.rr.com> wrote in message
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Dutch
also leathal so be very careful. The best way to fix it is to take it to
someone that Plastic Welds the stuff... it works great and when done and
painted you can't tell where the repair is....
"Tom G" <gs...@charter.net> wrote in message
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> That only works with PVC
> MEK is some pretty hostile stuff so follow all handling precautions.
>
>
>
> "Harvey Arkawy" <har...@as.net> wrote in message
> news:45036c30.01092...@posting.google.com...
Bu...@trailertrash.com
exact reason. It is a catalyst for polyester resin products. 3M 5200 will
glue the world together and hold for as long as you or I am going to live.
"Harvey Arkawy" <har...@as.net> wrote in message
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Dutch
<Bu...@TrailerTrash.com> wrote in message
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Sam Eaddy
for 20 years.........least i can spell it! :)
Gadabout Gaddis
wrote:
>just thought i would be spelling police today. i have work with this stuff
>for 20 years.........least i can spell it! :)
Hay, Spelilin Policeman, U need 2 lern bout gramma & puntuashun. Mabe
a bit bout capatalzashun 2.