Sikaflex® 221i 300ml - white

Sikaflex®-221i - One-component adhesive and sealant

Sikaflex®-221i is a high-quality, multifunctional, stable, one-component polyurethane adhesive and sealant. The product cures on exposure to atmospheric moisture. Sikaflex®-221i is used for general sealing and for applications in lightweight construction.

Product advantages

• 1-component formulation
• Elastic
• Low odour
• Non-corrosive
• Can be painted over
• Sandable
• Broad adhesion spectrum
• Solvent-free and very low VOC
• Low isocyanate content

Application

Sikaflex®-221i adheres well to a wide range of substrates and is suitable for elastic, durable sealing. Suitable substrates are metals, primers and paints (two-component systems), ceramic materials and plastics. Follow the manufacturer's recommendations before using Sikaflex®-221i on materials at risk of stress cracking. Preliminary tests must be carried out with original materials to avoid stress cracking. This product is only suitable for experienced users. To ensure adhesion and material compatibility, preliminary tests must be carried out with original materials under the respective conditions.

Technical Data

Chemical base: 1-component polyurethaneColour(CQP001-1): White, grey, blackCuring mechanism: Moisture-curingDensitybefore curing: 1.3 kg/l (depending on colour)Stability: GoodProcessing temperature: 10 to 40 °CHautoforming time(CQP019-1): 60 minutes (at 23 °C / 50 % r.h.)Volume change (CQP014-1): -3 %HardnessShore A (CQP023-1 / ISO 7619-1): 45Tensile strength(CQP036-1 / ISO 527): 1.8 MPaElongation at break(CQP036-1 / ISO 527): 700 %Tear resistance(CQP045-1 / ISO 34): 8 N/mmApplication temperature (CQP513-1): -50 to 90 °C (4 hours 120 °C) / 1 hour 140 °C)Shelf life (CQP016-1): 12 months (storage below 25 °C)