Which adhesive to use on septic connections

I am replacing a busted Thetfort valve on my 1982 280' motorhome. I was able to disassemble the original connections by applying heat from a heat gun and I have all the replacement parts. I need to know what adhesive to use to reconnect the septic drain pipe connections. I have seen posts that mentioned theTremco brand but they didn't mention the specific product. I want something that will seal the joints but can also be removed with heat like the factory adhesive.



Thanks ahead for any suggestions!

general78