On Tuesday, May 23, 2017 at 9:36:14 PM UTC-4, Retired wrote:

Mfr. Oatey says not to use Pipe Dope on plastic pipes. Use their
product Hercules Real Tuff instead

re Pipe Dope
http://www.homedepot.com/catalog/pdf...9698cab43b.pdf

"Do not use on threaded plastic pipes (use Hercules Real Tuff TM
or Megaloc TM )."


Re Real Tuff
http://www.homedepot.com/catalog/pdf...37a8ac4e2d.pdf

"use on
Aluminum, Black Iron, Brass, Copper, Glass, Monel, Natural Rubber,
Plastic(P.E.,Reinforced), PVC, ABS, CPVC"


I've never used pipe dope on PVC, only on metal piping. PVC I aways
use teflon tape. For me, it's just habit and what seemed right.
Interesting that the dope manufacturer says not to use it on plastic.