Sika Sikaflex 221 Multi-Purpose Polyurethane Sealant and Adhesive - 10.3oz Cartridge in Aluminum Gray

Sikaflex 221 Multi-Purpose Polyurethane Sealant/Adhesive - 10.3oz(300ml) Cartridge - Aluminum Gray

Sikaflex-221 is a high-quality multi-purpose non-sag 1-c polyurethane sealant/adhesive that cures on exposure to atmospheric humidity to form a durable elastomer. Meets approvals ASTM C920 types Sikaflex-221 is tested and classified in accordance with ANSI/UL 723 Test for Surface Burning Characteristics of Building Materials.

Uses:

Sikaflex-221 bonds well to a wide variety of substrates and is suitable for making permanent elastic seals of high adhesive strength. Suitable substrate materials are wood, metals, metal primers and paint coatings (2-c systems), ceramic materials and plastics.

Characteristics Advantages:

• Highly elastic and durable
• Resistant to aging and weathering exposure
• Non-corrosive
• Can be sanded and overpainted
• NSF registered, Proprietary Substances and Nonfood Compounds (black, gray, and white)
• UL listed for potable water (black, gray, and white)

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

The Sika Sikaflex 221 is a versatile, high-quality polyurethane sealant and adhesive formulated for a wide range of bonding and sealing applications. This 10.3-ounce cartridge in aluminum gray is designed to cure upon exposure to atmospheric humidity, forming a durable, elastic elastomer that adheres strongly to various substrates including wood, metals, ceramic materials, and plastics. Its excellent bonding properties make it ideal for creating permanent, elastic seals with high adhesive strength in both indoor and outdoor environments. Suitable for use with metal primers and paint coatings, Sikaflex-221 provides reliable performance across diverse construction, repair, and manufacturing projects. Its non-sag formula ensures ease of application on vertical or overhead surfaces, while its high elasticity accommodates movement and expansion without cracking or losing adhesion. Furthermore, Sikaflex-221 is resistant to aging, weathering, and exposure to environmental elements, making it a dependable choice for long-term sealing and bonding solutions. The product is also NSF registered and UL listed for potable water applications, ensuring safety and compliance in plumbing and water-related projects. It can be sanded and overpainted, allowing for seamless integration into various finishing processes. Safety considerations include a warning about chemicals known to cause health risks, emphasizing proper handling and adherence to safety guidelines. Overall, Sikaflex 221 offers a professional-grade solution for contractors and DIY enthusiasts seeking a reliable, multi-purpose polyurethane sealant and adhesive with excellent durability and flexibility.

Features:

• High elasticity and durability for long-lasting seals

• Resistant to aging, weathering, and environmental exposure

• Non-corrosive formulation suitable for various substrates

• Can be sanded and overpainted for seamless finishes

• UL listed for potable water applications and NSF registered for safety