Sika 90891 Sikaflex 221 Polyurethane Sealant 10.3 oz White

Sika Sikaflex 221 is a premium one-component polyurethane sealant and adhesive designed for applications requiring permanently elastic bonds between materials with dissimilar coefficients of thermal expansion. This professional-grade sealant is ideal for marine, automotive, RV, and general construction applications where movement and vibration are present.

Key Features:

• Permanently elastic joint movement capability accommodates expansion and contraction
• Excellent adhesion to a wide variety of substrates including metals, plastics, wood, and composites
• Rapid curing formula saves time on installation projects
• Odorless and non-staining formulation safe for visible applications
• Superior waterproofing properties for sealing joints, seams, doors, and windows
• UV and weather resistant for long-lasting durability in outdoor environments
• Paintable after curing for seamless finishing

Sikaflex 221 bonds dissimilar materials effectively while maintaining flexibility to prevent joint failure due to thermal cycling or structural movement. The white color provides a clean, finished appearance suitable for visible seams and joints. Each cartridge contains 10.3 fluid ounces and is compatible with standard caulking guns for easy application.