Originally Posted by JohnG
52 cents a tube can stack up fast. I juist ordered 12 tubes of Sikaflex 221 which replaced Vulkem 636 and as Andy said from Inland RV, "Airstream production "HAS" changed from Vulkem sealer to "SIKAFLEX." So I saved over 3 bucks there besides having what is suppose to be a better product. However, they appear very simular by their qualities.
Above quote from thread http://www.airforums.com/forum...ead.php?t=9659
12 tubes? How big is a tube? is it a standard calk tube?
I just did a shell off and I bought 5 tubes of Vulkem. sealed the perimiter when I put the shell on. I have redone several seams on the roof.most of the gutters. I still have 1.25 tubes left. I should have plenty to replace my windows (the frames) in a couple weeks.