Flex Seal - Spray Tape or Liquid?

[Steve Burton]

I have a small leak in my manifold where a 3/4" gate valve attaches, everything is so close no way to cut out or replace anything without scrapping the whole manifold. Looking for recommendations on which product is best, leaning toward tape or spray but open to liquid. Anybody have experience with these? Thanks.

 

[Cook]

Weld on #15 would be my recommendation. I had a leak on my small Geo frag tank and that was what they recommended.

 

[york1]

I would use the tape and smack it on there like in the commercial. Seriously tho I would probably use the liquid. I don't know if i would trust it in the long run honestly.

 

[mphammer]

I have used flex seal quite a bit but never that type of application. I am with @york1 I would not want to use it under pressure long term, tape or spray

 

[urbanknight]

I have a 95 gallon RO/DI freshwater container that decided it wanted to spring a small leak three months ago. I bought some liquid Flex Seal at Home Depot. Drained the container and painted two coats over the leaking spot outside the container. allowed it 24 hours to dry and filled it again. Three months so far without leaking. The blessing here is that both my freshwater and saltwater mixing tanks sit on a slab adjacent to my sump pump. At worst case if one burst, it won't harm anything except my ego!

 

[Steve Burton]

It is a pressure line, I guess I'll plumb a whole new manifold, not worth the risk. Thanks for the advice guys.

 

[Steve Burton]

I lucked out. While investigating if I could just cut that valve off and plug it, i was able to pull the valve off of the manifold, it appears that it had never been glued. Problem solved.

 

[snarky shark]

Good for you. It's nice when something works out once in awhile.

Sent from my SM-N975U using Tapatalk

 

[Dmitri]

Weld on #15 would be my recommendation. I had a leak on my small Geo frag tank and that was what they recommended.

Do you have a link to this product? when I search for weld on 15 nothing useful comes up.

 

[urbanknight]

Good catch Steve! OOPS!

 

[Cook]

Do you have a link to this product? when I search for weld on 15 nothing useful comes up.

Typo. It's Weld on #16, it's the thicker version that comes in a tube.

 

[ichthyoid]

Do you have a link to this product? when I search for weld on 15 nothing useful comes up.

This is what I have & is recommended/used by Avast Marine-

Craftics #33 1.5oz

Craftics #33 thickened acrylic cement. Comes in a small 1.5oz foil tube, perfect for a few You-Built projects. Good shelf life with threaded cap. This solvent is comparable to Weld-On #16 and we use it interchangeably.

www.avastmarine.com