Sikaflex-521UV Joint mastic g.pel. 300 ml

Sikaflex 521 UV is a multifunctional, elastic one-component sealant based on a polyurethane hybrid with good stability indicators. It cures under the influence of atmospheric moisture to a durable elastomer. Sikaflex 521 UV is manufactured in accordance with the ISO 9001/14001 quality assurance system and the corresponding programs.

Advantages of the Sikaflex 521 UV product

• One-component composition based on a hybrid polyurethane;
• Excellent adhesion to a wide range of materials, including without the use of special preparation and primer (determined by test results);
• Easy to use, has excellent application properties: cone stability, holding capacity, short tail tear, excellent finishing of seams, etc.;
• Possibility of application both manually and using pumping units;
• Forms an elastic seam that perfectly fills cavities and compensates for dynamic loads;
• Exceptional protection of sealed materials against corrosion, as well as resistance to atmospheric influences, UV radiation and ageing;
• Possibility of grinding and painting after polymerization;
• Possibility of painting before the formation of a surface film (wet on wet);
• Electrical insulator;
• Low odor;
• Does not contain solvents, PVC, silicone, or volatile organic compounds.

Scope of application of the material

Sikaflex 521 UV has adhesion to a wide range of surfaces and is intended for the creation of elastic sealing joints with high bond strength. Before using the sealant on transparent plastics or surfaces that are prone to cracking, consult with the project specialists. The product is intended for professional use by experienced personnel only. Before use, it is recommended to conduct adhesion and compatibility tests with the materials used.