Sika 90893 Sikaflex 221 Polyurethane Sealant 10.3 oz Black

Sika Sikaflex 221 is a high-performance, one-component polyurethane sealant designed for marine and general multipurpose applications. This permanently elastic adhesive sealant creates durable bonds between materials with dissimilar coefficients of thermal expansion, making it ideal for applications where movement and flexibility are required.

Key Features:

• Permanently elastic formula accommodates joint movement and thermal expansion
• Excellent adhesion to a wide variety of substrates including metals, plastics, wood, and fiberglass
• Waterproof seal ideal for above and below waterline applications
• Odorless formula - safe for use in confined spaces
• Non-staining on most surfaces
• Rapid curing - develops strong bond quickly
• Paintable after curing
• Resistant to weathering, aging, and seawater

Common Applications:

• Sealing joints, seams, doors, and windows in marine environments
• Bonding deck hardware and fittings
• Waterproofing hull-to-deck joints
• RV and automotive body sealing
• General industrial and construction sealing applications

Each cartridge contains 10.3 fluid ounces of black sealant, compatible with standard caulking guns for easy application.