Tonsan® MS1937 is a high-quality, neutral, elastic single-component adhesive/sealant based on MS-Polymer, which cures by reaction with moisture to an elastic product. The skin formation and curing time are dependent on humidity and temperature, and the curing time also depends on joint depth. By increasing the temperature and moisture, these times can be reduced; low temperatures as well as low moisture retard the process.

Product Type1K (1 component) Adhesive, 1K (1 component) Sealant, Solvent free (100% Solids) Adhesive, Solvent free (100% Solids) Sealant

Application AreaAir Conditioning , Caravans, Containers, Joints, Railway Carriage, Vehicle Body, Ventilation Systems

Compatible Substrates & SurfacesMarble, Metal, Plastics, Steel

FeaturesExcellent Strength, Good Color Stability, Good Mechanical Properties, Good Sagging Resistance, Non Corrosive, Paintable, Thixotropic, UV Resistant

Technical Data Sheet

Enhanced TDS

Identification & Functionality

Features & Benefits

Product Highlights
  • MS1937 is a good compromise between an adhesive and a sealant based on MS-Polymer. MS1937 is suitable for elastic seal which also high strength is required.
  • MS1937 is odourless and free of solvents, isocyanates, silicones and PVC. It demonstrates good adhesion without primer to many substrates and is compatible with suitable paint systems. The adhesive/sealant also demonstrates good UV resistance and therefore can be used for interior and exterior applications.

Applications & Uses

Compatible Substrates & Surfaces
Cure Method
Application Instructions
  • The substrates must be clean, dry, free of oil and grease.
  • Sausage is applied with the corresponding Hand or Air pressure pistols. In the case of compressed air application, a pressure of (0.2 - 0.4) MPa is required.
  • After application, MS1937 can be smoothed with soapy water.

MS1937 has been tested and found to have excellent adhesion to the following unprimed substrates: aluminum, acrylic-coated aluminum, brass, steel, stainless steel, glass, fiberglass, ABS, rigid PVC, polyester etc. By the manufacturing of plastics, external release agents are used; these agents have to be removed prior to use. Depending on the surface it can be necessary to roughen the surface or to use a primer as an adhesion promoter to provide optimum adhesion.

Application Limitations

When bonding and sealing PMMA and polycarbonate, under tension, stress corrosion cracking may occur. In such cases MS1937 should not be utilized.


MS1937 may be over-painted, however due to the large number of paints and varnishes we strongly recommend a compatibility test before application. The drying time of alkyd resin based paints may increase.


Physical Form
White/black/gray thixotropic paste
Thermal Properties
ValueUnitsTest Method / Conditions
Application Temperature5 - 40°C
Operating Temperature- 40 - 100°C
Short Exposure120.0°C
Technical Data
ValueUnitsTest Method / Conditions
UV/Moisture Curing Performance (at 365 nm, for 30S,100% RH, RVT)100.0mW/cm²
Sag ResistanceNo sagging
Specific Gravityapprox. 1.45
Cured Properties
ValueUnitsTest Method / Conditions
Skin Formation Time (21 - 25°C, 45 - 55% relative humidity)5 - 20min
Cure Rate (21 - 25°C, 45 - 55% relative humidity)approx. 4mm/24h
Hardnessapprox. 55ISO7619, GB/T531, Shore A
Tensile Strengthapprox. 3.0MPaISO37, GB/T528
Elongation at Breakapprox. 200%ISO37, GB/T528
Physical and Mechanical Properties
ValueUnitsTest Method / Conditions
Extrusion Rate10 - 20s/20g
Working Time5 - 20min
Shear Strengthmin. 2MPa
Breakdown Voltagemin. 15kV/mm
Volume Resistancemin. 0.5×10¹⁵Ω.cm

Packaging & Availability

Packaging Type
Typical Packaging
  • Cartridge: 430g
  • Sausage: 400ml, 600ml

Storage & Handling

Shelf Life
12 Months
Storage Condition

Recommended storage temperature: 8°C to 28°C