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SIKAFLEX - 221 310ml Cartridge - Black

Multipurpose Adhesive Sealant Polyurethane
Stock Code:
520339
$29.95 incl GST

Stock Locations

  • Ballarat:
    Special Order
  • Shepparton:
    Special Order
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Description

DESCRIPTION

SIKAFLEX - 221 310ml Cartridge - Black

Multi-purpose adhesive sealant with a wide adhesion range

Sikaflex®-221 is a multi-purpose 1-component polyurethane adhesive / sealant that bonds well to a wide variety of substrates like metals, metal primers and paint coatings (2-component systems), ceramic materials and plastics. It is suitable for making permanent elastic seals.  

  • Bonds well to a wide variety of substrates
  • Resistant to ageing
  • Can be sanded and painted

PRODUCT BENEFITS

  • Bonds well to a wide variety of substrates
  • Resistant to ageing
  • Can be sanded and painted
  • Passes EN45545-2 R1/R7 HL3
  • Non-corrosive
  • Low odor
  • NSF-approved for incidental food contact
  • Potable water approved (meets AS4020 requirements)

Usage

Sikaflex®-221 bonds well to a wide variety of substrates and is suitable for making permanent elastic seals . Suitable substrate materials are metals, metal primers and paint coatings (2-component systems), ceramic materials and plastics. It is ideally used for internal sealing and simple bonding applications. 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.  

Packaging

Cartridge310 ml
Unipack

600 ml

Drum195 l

Product Details

Chemical base 

1-component polyurethane

 

Colour (CQP001-1) 

White, grey, black, beige

 

Cure mechanism 

Moisture-curing

Density (uncured)

depending on colour

 

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

 

 

Curing speed (CQP049-1) 

(see diagram)

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

Service temperature (CQP513-1)

 

24 hours

1 hour

 

-50 ─ 90 °C

120 °C

140 °C

 

Shelf life (CQP016-1) 

12 months B

 

CQP = Corporate Quality Procedure

A) 23 °C / 50 % r.h.

B) storage below 

Surface preparation

Surfaces must be clean, dry and free from grease, oil and dust.

Surface treatment depends on the specific nature of the substrates and is crucial for a long lasting bond. Suggestions for surface preparation may be found on the current edition of the appropriate Sika® Pre-Treatment Chart. Consider that these suggestions are based on experience and have in any case to be verified by tests on original substrates.

Application

Sikaflex®-221 can be processed between 5 °C and 40 °C but changes in reactivity and application properties have to be considered. The optimum temperature for substrate and sealant is between 15 °C and 25 °C.

Sikaflex®-221 can be processed with hand, pneumatic or electric driven piston guns as well as pump equipment. For advice on selecting and setting up a suitable pump system, contact the System Engineering Department of Sika Industry.

Tooling and finishing

Tooling and finishing must be carried out within the skin time of the sealant. It is recommended using Sika® Tooling Agent N. Other finishing agents must be tested for suitability and compatibility prior the use.

Removal

Uncured Sikaflex®-221 can be removed from tools and equipment with Sika® Remover-208 or another suitable solvent. Once cured, the material can only be removed mechanically. Hands and exposed skin have to be washed immediately using hand wipes such as Sika® Cleaner-350H or a suitable industrial hand cleaner and water. Do not use solvents on skin.

Overpainting

Sikaflex®-221 can be painted after formation of a skin. If the paint requires a baking process, best performance is achieved by allowing the sealant to fully cure first. 1C-PUR and 2C-acrylic based paints are usually suitable. All paints have to be tested by carrying preliminary trials under manufacturing conditions. The elasticity of paints is usually lower than of sealants what could lead to cracking of the paint film in the joint area.

Still can't find what you're looking for? Our website is continuously being updated, so contact us by phone or email for anything else:

Phone:
03 5336 1111

Email:
online@iw.net.au

Details

  • Brand:
    Sikaflex