Sikaflex 221
Multipurpose PU sealant for long term durability

Applications |
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Replaces | |
Available pack size | 300ml, 600ml, 23Litre |
Standards | NSF approved,ASTM C920, TT-S-00230C/REACH/RoHS |
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Specifications
Chemical Composition | Polyurethane |
Curing Mechanism | Moisture |
Color | White/Grey/Black/Brown |
Specific Gravity | N/A |
Recommended substrates | Metals, Plastics, Composites, Ceramic. |
Max gap fill | 6mm |
Tack Free Time | 60min |
Elongation at Break | 500% approx. |
Hardness | 40 Shore A |
Tensile Strength | 1.8MPa |
Service Temperature | -40°C to 90°C |
Features and Benefits
Very elastic and strong | |
NSF approved for incidental food contact | |
Bonds well to a variety of applications |
Notes
- Exhibits superior performance in transformer oil application
- Curing speed can vary depending on moisture and humidity presence
- Sealant inside an enclosed chamber can have delayed curing. Humidity chamber can be used to speedup.