Sikaflex 521 UV Weather Resistant Adhesive Sealant Light Grey 300ml

The Sikaflex 521 UV Weather Resistant Adhesive Sealant in light grey is a high-quality, 1-component Silane Terminated Polymer (STP) product designed for both internal and external applications. This versatile adhesive and sealant provides exceptional performance, offering excellent resistance to ageing and weathering, making it suitable for demanding environments.

One of the standout features of this sealant is its ability to bond well to a wide variety of substrates without the need for special pre-treatment. It effectively adheres to metals, ABS, PC, FRP, wood, timber, metal primers, paint coatings (2-component systems), ceramic materials, and various plastics.

Formulated to be isocyanate- and solvent-free, it boasts a low odour profile, ensuring a more pleasant and safer working environment. Additionally, the cured sealant can be overpainted and sanded, allowing for a seamless and professional finish on any project. Supplied in a handy 300ml cartridge, it is perfect for elastic bonding and sealing tasks across multiple trades and DIY applications.

Key Features

• Weathering and ageing-resistant STP adhesive sealant
• Wide adhesion range without special pre-treatment
• Isocyanate- and solvent-free formulation
• Can be overpainted and sanded
• Low odour application
• Volume: 300ml