Sealants

Sikaflex512 Caravan

Search for Tiger Seal on ebay

Soudal Fix All 

Stixall link

Other sealants you can use for caravans are called polyurethane  Click_here 

Don't use silicone sealant for sealing the outside of caravans

Tube adhesive

Evo_Grip use non solvent type

Gorilla_glue

Fix_all

Roll Mastic

W4_Roll_Mastic , Mastic Sealing Strip