Sikaflex® 221 Multi-Purpose Adhesive and Sealant

Sikaflex® 221 Multi-Purpose Adhesive and Sealant Overview

Sikaflex® 221 is a multi-purpose, one-component polyurethane adhesive and sealant that forms effective bonds with a variety of substrates, such as metals, metal primers, paint coatings (2-component systems), ceramics, and plastics. Sikaflex® 221 is ideal for internal sealing and simple bonding applications and is suitable for forming permanent elastic seals.

Features and Benefits

• Bonds well to a wide variety of substrates
• Resistant to aging
• Can be sanded and painted
• Listed under NSF/ANSI/CAN 61 ─ Drinking Water System Components
• Listed under NSF ─ Proprietary Substances and Nonfood Compounds
• Non-corrosive
• Low odor

Specifications

• Series: Sikaflex®-221
• Cartridge Size: 300 ml (10.1 fl oz)
• Chemical Base: 1-Component Polyurethane
• Color: White
• Cure Mechanism: Moisture-Curing
• Density (Uncured): 10.8 lb/gal (1.3 kg/l)    
• Non-Sag Properties: Good
• Application Temperature: 41 to 104°F (5 to 40°C) - Ambient
• Skin Time: 60 Minutes @ 73°F (23°C) / 50% r.h.
• Open Time: 45 Minutes @ 73°F (23°C) / 50% r.h.
• Curing Speed: See Product Data Sheet
• Shrinkage: 5%
• Shore A Hardness: 40
• Tensile Strength: 260 PSI (1.8 MPa)    
• Elongation at Break: 500%
• Tear Propagation Resistance: 7 N/mm (35 pli)
• Service Temperature: -58 to 194°F (-50 to 90°C)
  • 24 Hours: 248°F (120°C)
  • 1 Hour: 284°F (140°C)
• Shelf Life:
  • Cartridge / Unipack: 12 Months - Storage Below 77°F (25°C)
  • Pail / Drum: 6 Months - Storage Below 77°F (25°C)

Other Package Sizes Available

Unipacks (400 ml and 600 ml), 4.5 Gallon Pails, and 50 Gallon Drums available. Please Contact us for more information.