The Story
Sikaflex®-221 is the ultimate solution for marine and boating applications, offering superior adhesion and flexibility essential for maintaining the integrity of your vessel. Whether you're sealing joints, fastening components, or ensuring watertight connections, Sikaflex®-221 delivers reliable performance in harsh marine environments.
Product Overview
Sikaflex® 221 Multi-Purpose Polyurethane Sealant/Adhesive is a high-quality, non-sag 1-component polyurethane sealant and adhesive designed to provide durable, elastomeric seals that withstand the demanding conditions of marine settings. Available in a convenient 10.3oz (300ml) black cartridge, Sikaflex®-221 cures upon exposure to atmospheric humidity, forming a strong and long-lasting bond.
Key Features
| Feature | Description |
|---|---|
| Elasticity | Highly elastic, allowing for movement and flexing without cracking. |
| Durability | Resistant to aging, weathering, and UV exposure, ensuring longevity in marine environments. |
| Non-Corrosive | Does not corrode or degrade metal substrates, making it ideal for boat construction and repairs. |
| Paintable | Can be sanded and overpainted to match your vessel’s aesthetics. |
| Regulatory Compliance | NSF registered and UL listed for potable water applications (available in black, gray, and white). |
Applications in Marine and Boating
Sikaflex®-221 excels in a variety of marine applications, including:
- Sealing deck fittings and hardware to prevent water ingress
- Bonding hull components for enhanced structural integrity
- Attaching non-metal materials to metal surfaces
- Creating watertight seals around windows and hatches
- Repairing and maintaining boat interiors and exteriors
Compatibility
Sikaflex®-221 bonds exceptionally well with a wide range of substrates commonly found in marine environments:
- Wood
- Metals and metal primers
- Paint coatings (2-component systems)
- Ceramic materials
- Plastics
Technical Specifications
- Type: 1-component polyurethane sealant/adhesive
- Color: Black
- Size: 10.3oz (300ml) Cartridge
- Cure Time: Cures on exposure to atmospheric humidity
- Standards: Meets ASTM C920 Type S&A and ANSI/UL 723
Advantages for Marine Use
- Maintains flexibility in varying temperatures and conditions
- Provides a strong, permanent bond that resists marine stresses
- Easy to apply and clean, streamlining maintenance and repairs
Safety Information
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, visit P65Warnings.ca.gov.
Additional Resources
Description
Sikaflex®-221 is the ultimate solution for marine and boating applications, offering superior adhesion and flexibility essential for maintaining the integrity of your vessel. Whether you're sealing joints, fastening components, or ensuring watertight connections, Sikaflex®-221 delivers reliable performance in harsh marine environments.
Product Overview
Sikaflex® 221 Multi-Purpose Polyurethane Sealant/Adhesive is a high-quality, non-sag 1-component polyurethane sealant and adhesive designed to provide durable, elastomeric seals that withstand the demanding conditions of marine settings. Available in a convenient 10.3oz (300ml) black cartridge, Sikaflex®-221 cures upon exposure to atmospheric humidity, forming a strong and long-lasting bond.
Key Features
| Feature | Description |
|---|---|
| Elasticity | Highly elastic, allowing for movement and flexing without cracking. |
| Durability | Resistant to aging, weathering, and UV exposure, ensuring longevity in marine environments. |
| Non-Corrosive | Does not corrode or degrade metal substrates, making it ideal for boat construction and repairs. |
| Paintable | Can be sanded and overpainted to match your vessel’s aesthetics. |
| Regulatory Compliance | NSF registered and UL listed for potable water applications (available in black, gray, and white). |
Applications in Marine and Boating
Sikaflex®-221 excels in a variety of marine applications, including:
- Sealing deck fittings and hardware to prevent water ingress
- Bonding hull components for enhanced structural integrity
- Attaching non-metal materials to metal surfaces
- Creating watertight seals around windows and hatches
- Repairing and maintaining boat interiors and exteriors
Compatibility
Sikaflex®-221 bonds exceptionally well with a wide range of substrates commonly found in marine environments:
- Wood
- Metals and metal primers
- Paint coatings (2-component systems)
- Ceramic materials
- Plastics
Technical Specifications
- Type: 1-component polyurethane sealant/adhesive
- Color: Black
- Size: 10.3oz (300ml) Cartridge
- Cure Time: Cures on exposure to atmospheric humidity
- Standards: Meets ASTM C920 Type S&A and ANSI/UL 723
Advantages for Marine Use
- Maintains flexibility in varying temperatures and conditions
- Provides a strong, permanent bond that resists marine stresses
- Easy to apply and clean, streamlining maintenance and repairs
Safety Information
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, visit P65Warnings.ca.gov.