plastic tank repair

Take exact measurements and then buy the same size new tank. It's the only sure repair.
RichH

What's the break look like? What is the plastic code number, inside a little circle or recycle type marking?

Just a shot in the dark, silicone putty, a possible brand name is Sugru.

email this guy at Newmar. He can or will get someone for the right product. You need you coach number.

glanduyt@newmarcorp.com

GordonThree wrote:
What's the break look like?

Three drilled round holes.
There Newmar folks are off for the weekend

Tom/Barb wrote:

GordonThree wrote:
What's the break look like?

Three drilled round holes.
There Newmar folks are off for the weekend

I'd try the Sugru... It is really versatile and if it doesn't work it is easily removed.

In the Safety section of Sugru's FAQ website, they state that Sugru is not considered safe for food or drink. If your tank is made of polyethylene, not much will want to stick to it. I believe plastic welding would be required. As suggested, contact Newmar to find out the type of plastic used.

Mortimer Brewster wrote:
If your tank is made of polyethylene, not much will want to stick to it. I believe plastic welding would be required. As suggested, contact Newmar to find out the type of plastic used.

Most fresh water tanks are polyethylene, Usually MDPE (Medium density Polyethylene) and you are correct, nothing made will bond with it permanently. Epoxy patch sometimes will work depending on the nature of the crack or hole, but it's a ****-shoot at best. I've seen it hold for years and have seen it fail immediately.

Plastic welding is the way to go, which is easy as long as you have access. You do need the correct equipment such as a plastic welding setup that connects to an air source to control heat, and the correct rods.

If the tank is of a white translucent color it's Poly. The only ABS fresh water tanks I have seen are made by Valterra, and I have not seen many used by the RV manufacturers.

How about washer head screws, that fit the holes, with a rubber sealing washer to prevent continued leaks?

I have a fresh water tank that is made from the tupper ware type plastic, what repairs it ?

JB WATER WELD


https://www.jbweld.com/

No muss no fuss. It is a Putty stick that you knead in your hands and stick it in hole or crack.

I fixed a plastic water fountain while the water was in it!
Great product and WORKS. You can sand and file it too.

Rated safe for fresh water plumbing and portable water tanks.


Plumbing, Tub, Shower & Drains
Fuel Tanks
Marine & Boats
>> Potable Water Tanks <<

J-B Weld will not adhere or bond well to:

Any flexible rubber surface
Leather
Vinyl
Canvas
Polypropylene plastic
Polyethylene plastic