Sikaflex® 552 High Strength Elastic Hybrid

Sika's 500 Series Hybrid sealants are a unique integration of Sika's high-performance polyurethane and silicone sealant technologies. They are often referred to as Silane Terminated Polymers (STP).
These technologies create a hybrid sealant that has the high strength, paintable properties of a polyurethane sealant, while also having the superior weathering and UV resistance of a silicone sealant.
The 500 Series Hybrid adhesive sealants can be used for all bonding and sealing applications, with the added benefit of adhesion to a wide range of substrates with less surface preparation.

Sikaflex-552 is a truly non-sagging, high strength, permanently elastic, hybrid (silane terminated polymer) structural adhesive. It is is suitable for structural joints that will be subjected to dynamic stresses.
Sikaflex®-552 bonds well to a wide variety of substrates and is suitable for making permanent high strength elastic adhesive seals.

Suitable substrate materials include wood, metals, metal primers and paint coatings (two-part systems), ceramic materials, plastics and glass.

Typical uses include bonding bulkheads, toe rails, and port and hatch frames -- anywhere maximum UV resistance is desired. Otherwise use Sika's 292 structural adhesive, with its somewhat higher strength.
Having said that, Sikaflex 552 can also be used for interior applications such as bonding flooring components, shower stalls, cabinets, bonding panels and trim and molding.

Compatible substrate materials include wood, metals, painted surfaces, ceramic materials, and plastics.

• High performance, elastic, one-part, silane-terminated polymer structural adhesive
• Significantly enhanced UV resistance (non-yellowing); resistant to aging and weathering
• Cures on exposure to atmospheric moisture to form a durable elastomer
• Fast skin-over (40 minutes), high initial green strength
• Effective for large gap-filling applications
• Its permanent elasticity makes it ideal for bonding, especially dissimilar materials
• Low VOC
• Contains no isocyanate or solvents
• Adhesion can be improved by pre-treating with Sika Cleaner 226
• Please refer to the Sika Primer Chart for 500 Series Hybrid Sealants for specific application information for both products and substrates