Sikaflex®-521 UV
Isocyanate free weathering resistant sealant
Sikaflex®-521 UV is a weathering resitant 1-component Silane Terminated Polymer (STP) sealant that cures on exposure to atmospheric humidity. This multipurpose product is suitable for internal and external sealing appications.
- Ageing and weathering resistant
- Bonds well to a wide variety of substrates without the need for special pre-treatment
- Can be overpainted
- Can be sanded
- Low odor
- Non-corrosive
- Isocyanate- and solvent-free
- Silicone- and PVC-free