Sikaflex 221

Sikaflex-221 is a multi-purpose 1-component, moisture-curing polyurethane adhesive/sealant that bonds to a wide variety of substrates.

Features:

• Adhesion to a wide range of substrates
• Ageing resistant
• Can be sanded and painted
• Non-corrosive, low odour

Applications:

• Permanent elastic sealing and bonding on metals, primers, paint coatings, ceramics and plastics

Specifications / Approvals:

• EN 45545-2 R1/R7 HL3

Typical Properties:

• Colours: White, grey, black, brown
• Density (uncured): 1.3 kg/l
• Skin time: 60 minutes (23°C / 50% r.h.)
• Shore A hardness: 40
• Tensile strength: 1.8 MPa
• Elongation at break: 500%
• Tear propagation resistance: 7 N/mm
• Service temperature: -50°C to +90°C
• Shelf life: 12 months (below 25°C)