Using plastic PEX with brass fixtures

[donl1150]

I am wondering if I need to use teflon tape on the threads of a brass fixture when connecting to a female plastic PEX connector? or vice versa....

Thanks

Don

 

[Jadnashua]

Fittings with tapered pipe threads ALWAYS require some sort of sealant. Now, if there's a plastic fitting involved, and you choose pipe dope, make sure it is compatible with a plastic fitting, not all are. Otherwise, use tape to make the seal.

 

[Sponsor]

 

[hj]

It depends on WHAT the brass thread is on.

 

[donl1150]

It depends on WHAT the brass thread is on.

In this case, the brass threads are on a Delta shower diverter valve. The plastic PEX fitting is a female to CTS.