Sealing Materials

[Aquabud]

Can anyone tell me what kind of sealant to use on the various exterior parts of the AS. Around the windows it looks like an aluminum colored material. What is it? Also, what kind of sealant should be used on plastic items (vents, stack, AC, etc.).

Thanks.

[jmpratt]

I use Vulcum 116. Inland RV has it. I've been told that's what Airstream uses. I used it to install some fantastic fans and it works great.

[lewster]

Originally Posted by Aquabud

Can anyone tell me what kind of sealant to use on the various exterior parts of the AS. Around the windows it looks like an aluminum colored material. What is it? Also, what kind of sealant should be used on plastic items (vents, stack, AC, etc.).

Thanks.

The Airstream factory uses SikaFlex 221 one part polyurethane sealant on all large seams on the trailer and as a bonding agent on the panel overlap areas that you don't see, and Acryl-R for the smaller seams where wicking into the seam is required.

Many OEMs of large, luxury motor homes also use SikaFlex 221.

Roof sealing can use the same product or their self-leveling Sika-Flex 715.

Great product that I use constantly.

[68 TWind]

Trempro 636 is the new name for Vulkem. Your local Fastenal store will have it or can get it in a day or so. I use it most sealing jobs. You can put some in a large syringe and it will give you a small bead for places where you need a very thin bead.