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

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

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-performance polyurethane sealant and adhesive designed for a wide range of applications. This 10.3 oz cartridge features a non-sag, single-component formulation that cures upon exposure to atmospheric humidity, forming a durable elastomeric bond. Its excellent elasticity and strong adhesion make it suitable for creating permanent, flexible seals on various substrates including wood, metals, painted surfaces, ceramics, and plastics. The Sikaflex 221 meets industry standards such as ASTM C920 and is classified for surface burning characteristics in accordance with ANSI/UL 723, ensuring safety and compliance for many construction and repair projects. Its resistance to aging and weathering ensures long-lasting performance in outdoor environments, while its non-corrosive nature protects sensitive materials. This sealant is also overpaintable and can be sanded, offering further versatility for finishing work. Additionally, it is NSF registered and UL listed for potable water applications, making it ideal for use in plumbing and water-related installations. The product is available in black, gray, and white, with proprietary substances that comply with nonfood compound regulations. Please note that this product contains chemicals known to the State of California to cause cancer, birth defects, or reproductive harm. For more information, visit P65Warnings.ca.gov. Suitable for both professional and DIY projects, Sikaflex 221 provides a reliable, elastic sealant and adhesive solution that adheres to a variety of substrates while offering resistance to environmental exposure and aging.

Features:

• Highly elastic and durable sealant and adhesive

• Resistant to aging and weathering exposure

• Non-corrosive formulation suitable for various substrates

• Can be sanded and overpainted for finishing flexibility

• UL listed for potable water applications and NSF registered

• Meets ASTM C920 standards and ANSI/UL 723 classification