What to Seal Water Tank Belly Pan ???

[Dano57]

The wife spoke to Inca today and they have sent the repaired freshwater tank back to us today so we should have it by the weekend. So I need to get ready to re-install it. The tin or steal pan that holds the tank between the axial in a 79 Excella 31" had some sealer around it, was it Vulkem or plumbers putty tape? What do you think I should use.

If Vulkem, are there places I should look for it locally? I asked at an RV supply house but they had never heard of it.

Thanks,
Dan

[Bradjun1]

I believe Home Depot carries Vulkem. If not try Vintage Trailer Supply. Vintagetrailersupply.com.