plastic & compression

[dazzmos]

is it ok to use metel compression fittings on plastic pipe with inserts?
also the blue pipe
also i know you shouldnt use joint compound

 

[Breesey]

It's OK.

What's joint compound?

 

[IJWS15]

As an amateur I have never had much success with these (speedfit pipe - not tight enough and they leak, too tight and they leak) so I use a plastic straight connector to a short piece of copper and put the compression fitting on that. Gives me some peace of mind.

 

[Softus]

is it ok to use metel compression fittings on plastic pipe with inserts?

Yes. Don't leave out the insert.

also the blue pipe

Also yes. Also don't leave out the insert.

also i know you shouldnt use joint compound

Correct, but you can use PTFE tape.