Sika Sikaflex® 554 is a one-component, high-strength assembly adhesive based on Silane Terminated Polymer (STP) polymer technology. It has been developed for professional applications in campers, caravans, motorhomes and the automotive industry , where secure and long-lasting bonding of structural elements is required.
The product provides very good adhesion without the need for a primer to most surfaces - metal, aluminum, painted panels, plastics and composite materials. It is characterized by high resistance to vibration, weathering and UV rays, making it suitable for outdoor use and heavy installations.
Sikaflex®-554 is free of isocyanates and solvents, has low odor and is suitable for professional and long-lasting installation solutions.
Suitable for:
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Installation of solar panels
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Bonding of aluminum and composite panels
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Installation of rails, profiles and structural elements
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Applications with dynamic loads and vibrations
Technical characteristics:
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Type: adhesive sealant (STP)
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Curing: by moisture from the air
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Volume: 300 ml
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Shape: cartridge
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Color: (depending on availability – white / black / gray)
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Application temperature: approximately +5°C to +40°C
| Characteristics
|
Sikaflex®522
|
Sikaflex®554 |
| Product type
|
Elastic sealant + glue |
Mostly bonding adhesive
|
| Main function |
Basic sealing with additional adhesive ability |
Basic bonding and assembly of components
|
| Application |
For joints, sealing windows, hatches, covers, sanitary areas, kitchens, etc.
|
For installation of large elements , panels, structures, heavily loaded connections
|
| Dynamic loads |
Appropriate, but not the main focus |
Excellent resistance to dynamic loads and vibrations |
| Adhesion without primer |
Yes — good adhesion to many surfaces without primer
|
Yes — good adhesion without primer, especially for assembly applications |
| Weather resistance |
High resistance and UV stability
|
Very good resistance to external conditions |
| Special certificates |
EC1+ (very low emissions), ISEGA (can be in contact with food), VDI 6022 (hygiene requirements)
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ISEGA, DIN EN 45545-2 R1/R7 HL3 (fire protection) |
| Application in caravans / campers
|
Sealing joints, windows, water repellency |
Installation of heavy elements - panels, rails, fasteners |
| Recommended for DIY or professional |
Suitable for a wide range of uses, including DIY |
More for installations and professional use
|
Key differences explained
🟡 Sikaflex®-522 is a universal sealant with adhesive properties , intended primarily for elastic sealing and small assembly tasks . It is characterized by very low emissions , good odor and high weather resistance, making it suitable for standard joints, windows, sanitary and kitchen seals in campers and caravans.
🟢 Sikaflex®-554 is a strong assembly adhesive with STP technology, designed for bonding larger and loaded components . It offers good adhesion without primer, very good weather resistance and is suitable for dynamic loads and structural assemblies , e.g. fastening panels, solar and other heavy elements.
When to choose which one?
✅ Choose Sikaflex®-522 if you are looking for:
• Sealing joints, windows, hatches or sanitary areas
• Low emission product with high UV resistance
• Universal adhesive for light to medium applications
✅ Choose Sikaflex®-554 if:
• You are installing heavier or structural elements
• You want strong traction and resistance to dynamic loads
• Installation work on panels, rails, supports, etc.
