Pretreatment
Abrasives
Glue, sealer and putty
Masking
Paint and varnish
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Car care and polishing
Tools and equipment
Safety
Smart repair
Sika
Flex 521 Uv Stp Sealant/Adhesive
About the product
Sikaflex®-521 UV is a weather-resistant 1-component silane-terminated polymer (STP) adhesive/caulk that adheres well to many surfaces such as metal, ABS, PC, fiberglass and wood - usually without any pre-treatment.
A multifunctional product that is suitable for both indoor and outdoor grouting tasks.
Sikaflex®-521 UV adheres well to many different surfaces and is suitable for elastic jointing and gluing. Suitable surface materials include timber, metals, metal primers and two-component paint systems, ceramics and plastics. A multifunctional product that is suitable for both indoor and outdoor grouting tasks. Ask the manufacturer for advice and test the material on the actual surface before using name on surfaces prone to cracking.
This product should only be used by experienced, professional users. Tests must be carried out on the actual surfaces and under the actual conditions to ensure adhesion and the suitability of the material.
- Chemical base Silane-terminated polymer
- Curing mechanism Moisture curing
- Density Depends on color 1.4 kg/l
- Non-sag property Good
- Ambient application temperature 5 ─ 40 °C
- Skin formation time (CQP019-1) 30 minutes A
- Curing speed (CQP049-1) (see diagram)
- Shrinkage (CQP014-1) 2%
- Shore A hardness (CQP023-1 / ISO 48-4) 40
- Breaking strength (CQP036-1 / ISO 527) 1.8 MPa
- Elongation at break (CQP036-1 / ISO 37) 400%
- Tear strength (CQP045-1 / ISO 34) 5.5 N/mm
| Go Big | Number of sales units | ||
|---|---|---|---|
| 1 BOX | 12 |
Safety and enviroment
H sentences
- H304: May be fatal if swallowed and enters airways.
- H413: May cause long lasting harmful effects to aquatic life.
- H317: May cause an allergic skin reaction.
- H226: Flammable liquid and vapour.
| Go Big | Number of sales units | ||
|---|---|---|---|
| 1 BOX | 12 |
Safety and enviroment
H sentences
- H317: May cause an allergic skin reaction.
- H226: Flammable liquid and vapour.
- H304: May be fatal if swallowed and enters airways.
- H413: May cause long lasting harmful effects to aquatic life.
| Go Big | Number of sales units | ||
|---|---|---|---|
| 1 BOX | 12 |
Safety and enviroment
H sentences
- H226: Flammable liquid and vapour.
- H413: May cause long lasting harmful effects to aquatic life.
- H304: May be fatal if swallowed and enters airways.
- H317: May cause an allergic skin reaction.
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