Sikaflex 252 Bonding Adhesive Sealant used widely for caravan and motorhome bonding. Sikaflex 252 is a high quality structural adhesive. Suitable for structural joints that will be subjected to dynamic stresses. As recommended by Thule for bike rack bonding and Dometic among others. Can be used for bonding solar panels and awning brackets (along with bolts) Suitable substrate materials for use with Sika 252 are: Metals, (particulary aluminium including anodized components) sheet metal, (including phosphated,chromated & zinc-plated components) Timber & Timber Products Metal primers & paint coatings, (2-C systems) ceramic materials & plastics. Advantages & Benefits of Sikaflex 252 - Structural Adhesive: Very High Bond Strength Can be over-painted. Non-corrosive. Electrically non-conductive. Vibration damping. Good gap filling properties. Sika 252 is available in Black and White and comes in 300ml Tubes.