SIKAFLEX 221 GREY - CARTRIDGE 300 ML
SIKAFLEX 221 is a high-quality multi-purpose non-sag 1-C polyurethane sealant that cures on exposure to atmospheric humidity to form a durable elastomer.
Characteristics
- 1-C formulation
- Elastic
- Low odour
- Resistant to ageing
- Non-corrosive
- Can be overpainted
- Can be sanded
- Bonds well to a wide variety of substrates
- NSF-approved for incidental food contact
Application
- Bonds well to a wide variety of substrates and is suitable for making permanent elastic seals of high adhesive strength
- Suitable substrate materials are metals, metal primers and paint coatings (2-C systems), ceramic materials and plastics
Technical characteristics
- Chemical base : 1-C polyurethane
- Colour (CQP 001-1) : Grey
- Cure mechanism : Moisture-curing
- Density (uncured) (CQP 006-4) : 1.3 kg/l approx. depending on colour
- Non-sag properties : Good
- Application temperature : +5°C to +40°C (+40°F to +105°F)
- Tack free time at 23°C / 50% r.h. (CQP 019-1) : 60 min. approx.
- Open time at 23°C / 50% r.h. (CQP 526-1) : 45 min. approx.
- Shrinkage (CQP 014-1) : 5% approx.
- Shore A-hardness (CQP 023-1 / ISO 868) : 40 approx.
- Tensile strength (CQP 036-1 / ISO 37) : 1.8 MPa approx.
- Elongation at break (CQP 036-1 / ISO 37) : 500% approx.
- Tear propagation resistance (CQP 045-1/ ISO 34) : 7 N/mm approx.
- Glass transition temperature (CQP 509 -1/ ISO 4663) : -45°C (-50°F) approx.
- Thermal resistance (CQP 513-1) : 90°C (195°F)
Short term
1 day : 120°C (250°F)
1 hour : 140°C (285°F)
- Service temperature : -40°C to +90°C (-40°F to -195°F)
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Connexion
