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TEROSON® MS 939 – Silane-Modified Polymer Sealant – Bonding and sealing in automotive and construction industries

  • Item Name: TEROSON MS 939
  • Manufacturer: Henkel
  • Product category: Adhesive/Sealant
  • Technologies: Silane-modified polymer
  • Applications: Ideal for elastic bonding and sealing in automotive, caravan, railway, container, and general metal construction.
  • Color: White, Off-white, Grey, Black
  • Cure type: Humidity (moisture cure)
  • Package size: Available in 290 mL cartridges and foil cartridges of 310 mL and 570 mL
  • Shelf life: 12 months

1. Product Overview

  • Technology: Silane-modified polymer
  • Type: One-component adhesive/sealant
  • Curing Method: Moisture cure
  • Appearance: White, Off-white, Grey, Black
  • Consistency: Pasty, Thixotropic
  • Odor: Characteristic
  • Key Features:
    • Solvent-, isocyanate-, silicone-, and PVC-free
    • High sag resistance for precise positioning
    • Good adhesion to various substrates
    • UV-resistant for interior and exterior applications
    • Compatible with suitable paint systems
    • Allows accelerated curing with two-component application

2. Applications

  • Elastic bonding of metals and plastics, e.g., vehicle side paneling, roof bonding in automotive and caravan manufacturing.
  • Sealing applications in vehicles, railway carriages, containers, and general metal construction.
  • Used in industries such as electrical, plastics, air-conditioning, and ventilation.

3. Typical Properties

Property Value Test Standard
Density (g/cm³) ~1.5
Sag Resistance No sagging (15 mm profile) DIN
Skin Formation Time (min) ~4 to 10
Cure Rate (mm/24 hrs) ~3
Shore-A Hardness ~55 ISO 868
Tensile Strength (MPa) ~3.0 ISO 37
Elongation at Break (%) ~250 ISO 37
Stress at 100% Elongation (MPa) ~1.3 ISO 37
Volume Change (%) <2 DIN 52451
Paint Compatibility Compatible
UV Resistance No significant changes Osram Vitalux 300W, QUV
Damp Heat Test Durability Passed (1,000 hours, 85°C, 85% RH) IEC 61215/61646
Application Temperature (°C) 5 to 40
Service Temperature (°C) -40 to +100
Short-term Exposure (1h) (°C) Up to 120

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