Sikaflex®-521 UV  is your go-to solution for reliable sealing needs. This weathering-resistant 1-component Silane Terminated Polymer (STP) adhesive/sealant bonds well to a wide variety of surfaces such as metals, ABS, PC, FRP, and wood, usually with no special pre-treatment required.
 
 Sikaflex®-521 UV ensures durability and versatility for all your caravan maintenance projects.
 
Perfect for both internal and external sealing applications. 
Ageing and weathering-resistant
Bonds well to a wide variety of substrates without the need for special pre-treatment
Isocyanate- and solvent-free
Can be overpainted
Can be sanded
Low odour