Heat shrink tube over threaded pvc joint?

[Levinson]

What do you think of using heat shrink tubes over threaded pvc joint (or just regular push fit cemented joints even)?
A properly connected pvc joints, threaded or not, shouldn't leak so it is not needed but just as an extra measure to feel a little bit more safer.

One could even put a thin layer of silicone between the heat shrink tube and the pvc joint before shrinking the tube ( this is being done on electric wire connections) but that might be going too far.

I'll be doing some plumbing work for my tank in the near future and thought of this. I did a quick search and found some cheap heat shrink tubes big enough to fit the fitting sizes I'll be using.
Also found some video online of someone joining two pvc pipes by using cut out pet bottle as a heat shrink tube and 2 rubber bands, one on each pipe using them as sort of like rubber gaskets and also to hold them in place.

 

[tedfisher496]

i have never heard of this method, Ibe been doing pvc work for 15 years in my house and various aquariums. All ive ever used is primer, glue and teflon tape.

 

[Dburr1014]

What do you think of using heat shrink tubes over threaded pvc joint (or just regular push fit cemented joints even)?
A properly connected pvc joints, threaded or not, shouldn't leak so it is not needed but just as an extra measure to feel a little bit more safer.

One could even put a thin layer of silicone between the heat shrink tube and the pvc joint before shrinking the tube ( this is being done on electric wire connections) but that might be going too far.

I'll be doing some plumbing work for my tank in the near future and thought of this. I did a quick search and found some cheap heat shrink tubes big enough to fit the fitting sizes I'll be using.
Also found some video online of someone joining two pvc pipes by using cut out pet bottle as a heat shrink tube and 2 rubber bands, one on each pipe using them as sort of like rubber gaskets and also to hold them in place.

Seems like an unnecessary step to hide bad joints.
Use primer and glue and done. I've never had a leaky glued joint.

 

[LARedstickreefer]

You’ve already got your work cut out for you, no reason to add to it

 

[tedfisher496]

Seems like an unnecessary step to hide bad joints.
Use primer and glue and done. I've never had a leaky glued joint.

i think its unessary

 

[Dburr1014]

i think its unessary

I think it's "unnecessary" or are you saying that about the OP and not correcting my spelling?
I'm confused. LOL

 

[snorklr]

I wouldn't bother...regular heat shrink probably wouldn't be perfectly watertight...stuff sold as "marine" heat shrink also has a glue inside it that melts and helps seal it...no clue if it would be reef safe...but PVC is also affected by heat (its what electricians use to bend it) so you could potentially damage the pipe while heating it...PVC is designed to seal at pressures WAY above what our hobby subjects them to...

 

[Dburr1014]

I wouldn't bother...regular heat shrink probably wouldn't be perfectly watertight...stuff sold as "marine" heat shrink also has a glue inside it that melts and helps seal it...no clue if it would be reef safe...but PVC is also affected by heat (its what electricians use to bend it) so you could potentially damage the pipe while heating it

Anything on the OD of the pipe doesn't have to be reef safe, it should never have contact with the water.

 

[redfishbluefish]

For threaded PVC joints, use thead sealant (AKA pipe dope), specifically made for PVC. Here's the stuff I use: