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Sikaflex 221i 300ml - black
Product no.:: 108706 | Manufacturer: Sika

1-component adhesive sealant

Sikaflex®-221 is a high-quality multi-purpose 1-component polyurethane adhesive / sealant that cures on exposure to atmospheric humidity. It is suitable for internal sealing and simple bonding applications.

PRODUCT BENEFITS

Bonds well to a wide variety of substrates
Resistant to ageing
Can be painted
Can be sanded
Non-corrosive
Low odour
NSF-approved for incidental food contact

Usage

Sikaflex®-221 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. Seek manufacturer’s advice and perform tests on original substrates before using Sikaflex®-221 on materials prone to stress cracking. This product is suitable for experienced professional users only. Test with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.

Chemical base 1-component: polyurethane

Colour (CQP001-1): Black

Cure mechanism: Moisture-curing

Density (uncured): 1.3 kg/l

Non-sag properties: Good

Application temperature: ambient 5 - 40 °C

Skin time (CQP019-1): 60 minutes A

Open time (CQP526-1): 45 minutes A

Shrinkage (CQP014-1): 5 %

Shore A hardness (CQP023-1 / ISO 7619-1): 40

Tensile strength (CQP036-1 / ISO 527): 1.8 MPa

Elongation at break (CQP036-1 / ISO 527): 500 %

Tear propagation resistance (CQP045-1 / ISO 34): 7 N/mm

Shelf life (CQP016-1): 12 months storage below 25 °C

Recommended products:

Sika standard nozzle for Sika cartridges

Sika standard nozzle for Sika cartridges

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