silicone sealant / polymer / single-component / construction

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silicone sealant silicone sealant - SIKAFLEX®-527 AT


  • Chemical composition:

    silicone, polymer

  • Number of components:


  • Field:

    construction, for sealing, fast, for the automotive industry, professional


Sikaflex®-527 AT
Isocyanate free sealant with reduced substrate preparation
Sikaflex®-527 AT is a 1-component Silan Terminated Polymer (STP) sealant that cures at exposure to atmospheric humidity. It is made for multipurpose elastic joints for interior and exterior of the vehicle body. Sikaflex®-527 AT adheres well to most materials commonly used in body shop.

- Fast curing
- Excellent working properties
- Over paintable with water-based paint systems

- Fast curing
- Excellent working properties
- Over paintable with water-based paint systems
- Good adhesion to a wide variety of substrates without primer
- Ageing and weathering resistant
- Low odor
- Non-corrosive
- Solvent and isocyanate-free
- Silicone and PVC-free

Areas of Application
Sikaflex®-527 AT is suitable for sealing, seam sealing, simple bonding as well as for vibration reduction and sound dampening measures in collision repair and vehicle body construction. It adheres well to most the materials commonly used in body shops, e.g. metal primers and paint coatings, metals, painted plastics and plastics. Seek manufacturer’s advice and perform tests on original substrates before using Sikaflex®-527 AT on materials prone to stress cracking. This product is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.

Other SIKA INDUSTRY products

Automotive Aftermarket