Description
Sikaflex®-221 is your go-to solution for a wide range of bonding and sealing needs. This multi-purpose, 1-component polyurethane adhesive sealant forms strong, permanent, and flexible seals on a variety of materials, including metals, plastics, ceramics, and even painted surfaces.
Key Benefits:
- Exceptional Adhesion: Bonds securely to a broad spectrum of substrates, ensuring a long-lasting hold.
- Durable & Weatherproof: Resists aging, weathering, and cracking, making it ideal for indoor and outdoor use.
- Easy to Finish: Can be sanded and painted to match your project’s aesthetics.
- Safe & Certified: Non-corrosive, low-odor, and meets NSF standards for drinking water system components and nonfood contact surfaces.
Ideal For:
- Creating permanent elastic seals
- Internal sealing applications
- Simple bonding tasks
- Automotive, marine, and industrial projects
Packaging Options:
- 300 ml Cartridge
- 400 ml Unipack Sausage
- 600 ml Unipack Sausage
- 4.5 gal Pails
- 50 gal Drum
Product Details:
| Chemical base | 1-component polyurethane |
| Color | White, aluminum gray, black, colonial white |
| Cure mechanism | Moisture-curing |
| Density | 1.3 kg/l (10.8 lb/gal) |
| Non-sag properties | Good |
| Application temperature | 5-40 °C (41-104 °F) |
| Skin time | 60 minutes |
| Open time | 45 minutes |
| Curing speed | 24 hours |
| Shrinkage | 5% |
| Shore A hardness (ISO 48-4) | 40 |
| Tensile strength (ISO 527) | 1.8 MPa (260 psi) |
| Elongation at break (ISO 527) | 500% |
| Tear propagation resistance (ISO 34) | 7 N/mm (40 pli) |
| Service temperature | -50-90 °C (-58-194 °F) 24 hours: 120 °C (248 °F) 1 hour: 140 °C (284 °F) |
| Shelf Life | Cartridge/Sausage: 12 months Pail/Drum: 6 months |
Note: Sikaflex®-221 is recommended for experienced professional users. Always test on actual substrates and conditions before full application to ensure optimal adhesion and material compatibility.
Reviews
There are no reviews yet.