Sikaflex® - 221

Product # SASIKA221B

One-Component Adhesive Sealant

Sikaflex®-221 is a high-quality, multi-purpose, non-sag one-component polyurethane sealant that cures on exposure to atmospheric humidity to form a durable elastomer. It meets ASTM C920 approvals and Federal Specifications TT-S-00230C. Sikaflex®-221 has been tested and classified in accordance with ANSI/UL 723 "Test for Surface Burning Characteristics of Building Materials". Sikaflex®-221 is manufactured in accordance with ISO 9001 and ISO 14001 Quality Assurance Systems.

ADVANTAGES AND BENEFITS

- One-component formulation
- Elastic
- Low odour
- Resistant to ageing and weathering exposure
- Non-corrosive
- Can be painted
- Can be sanded
- Bonds well to a wide variety of substrates
- NSF-approved for objects in contact with and potable water and food (colors: black and white only)
- Resistant to the stains and varnish

TECHNICAL SPECIFICATIONS

Product #
SASIKA221B
Brand
Sika
Finish
Black
Product Type
Polyurethane
Ideal Use
Expansion Joints, Outside
Base
Polyurethane
Optimal adherence to
Non-oiled Wood, Plastic, Aluminum, Steel, Painted metal, Vinyl, Stainless Steel, Galvanized steel
Tooling Time
20 to 40 minutes
Volume
300 ml
Weight
10 oz
Properties
Paintable
Packaging Specifications
Cardboard Cartridge

APPLICATION

Sikaflex®-221 bonds well to a wide variety of substrates and is suitable for making permanent elastic seals of high adhesive strength. Suitable substrates are: wood,metals, metal primers and paint coatings (2-C systems), ceramic materials and plastics. Before using on transparent and pigmented materials that are prone to stress cracking,contact the Technical Services Department of Sika Industry. This product is suitable for professional experienced users only. Testing with actual substrates and conditions has to be performed to ensure adhesion and material compatibility.