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Joint compound AKA dope is used as a lubricant and to seal minor imperfections of the threads

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Q: What is the purpose for plumbing pipe dope?
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Related questions

Can you use teflon pipe dope on PVC pipe when connecting to cast iron?

If you are screwing in -- yes -- If not -- you do not use pipe dope


What is the best type of plastic tubing per uses?

There are two main categories of plumbing pipe: plastic and metal.Not all pipes are as useful or effective as others, and each type is used for a specific purpose in plumbing. PVC pipe is a type of plastic plumbing pipe primarily used to transport high pressured water.


Is pipe dope used in joining copper unions?

No pipe dope is to be used on the brass seats they will seat dry.


When joining steel pipe use what?

pipe dope and teflon tape


Whats the difference between plumbing pipe threads and conduit pipe threads?

Plumbing pipe threads are squared and conduit pipe threads are tapered.


Do you need pipe dope for brass to brass?

Yes, it is still a pipe thread. The pipe dope is there to fill in the gaps in the thread. It is impossible to machine the treads close enough in pipe to not need something in the threads to make a seal.


Do you use pipe dope on compression ring fittings?

no


Which is discontinued pipes in plumbing?

Polybutylene pipe is a discontinued pipe.


What is the best thread dressing for galvanized to PVC pipe joints?

Pipe dope and/or teflon tape


Will carbon steel pipe touching copper pipe cause electrolysis in plumbing situations?

will carbon steel pipe touching copper pipe cause electrolysis in plumbing situations using water.


What is a plumbing bend?

A bend in a pipe


Do you need pipe dope to connect brass pipe to copper pipe?

NO but you will need some type of sealent OR braze or soldering