Yes. Megaloc will not seal a leak without redoing the joint and using the sealant on the male threads before joining.
No it is not safe for natural or synthetic rubber. For rubber, we recommend using Hercules Real-Tuff.
This compound is designed to seal threads on pipe. Please reach out to Oatey Technical with more application specifics. 1-800-203-1155.
No- Megaloc does not "set-up" or harden and I don't recommended it as a substitute for a lock washer (metal or polymer)
No, I originally used teflon, but I had leaks.
Not recommended as the fuel may dissolve the sealant and transport the sealant vehicle into small orifices intended to disperse the fuel (whether liquid or gaseous)
The sealant does not fully dry, it stays pliant but forms a seal.
I used Megaloc on threads cut into galvanized steel pipe; see no reason not to use it on stainless steel threads