ELASTOSIL® RT 563

1 of 36 products in this brand
ELASTOSIL® RT 563 is a pourable, room-temperature-vulcanizing, condensation-curing, two-component silicone rubber. It exhibits excellent flow and high hardness. This product is specifically designed for encapsulating electronic components. To initiate the curing process, Catalyst T37 can be added for longer pot lives and curing times, or Catalyst T40 for shorter pot lives and curing times.

Product Type: 2K (2 component) Sealant, Encapsulant, Potting Compound

Cure Method: Air Dry, Moisture Cure

Chemical Family: Silicones

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Applications & Uses

Applications

Encapsulation of electronic components

Application Details

Processing

  • ELASTOSIL® RT 563 is cured by adding Catalyst T37 for long pot lives and curing times, or Catalyst T40 for short pot lives and curing times.
  • The pot life is the period of time at 23 °C / 50 % rel. humidity during which the catalyzed mix to attain a viscosity of 100,000 mPa s and still be just pourable
  • Catalyst T 37 and T 40 act as solvents until curing is complete. Preliminary tests must therefore be carried out to ensure that they are compatible with the components.

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Density (at 20°C)approx. 1.27 g/cm³DIN 53217
Dynamic Viscosity (at 23°C)4000 - 7000 mPa·sBrookfield
Catalyst Properties
ValueUnitsTest Method / Conditions
Curing Time (tack-free, Mixing ratio wt 4% Catalyst T 37)24hours
Curing Time (tack-free, Mixing ratio wt 4 % Catalyst T 40)8hours
Dynamic Viscosity (at 23°C, Mixing ratio wt 4% Catalyst T 37)5000mPa·sISO 3219
Dynamic Viscosity (at 23°C, Mixing ratio wt 4 % Catalyst T 40)5000mPa·sISO 3219
Linear Shrinkage (at 23°C, Mixing ratio wt 4% Catalyst T 37)1%
Linear Shrinkage (at 23°C, Mixing ratio wt 4 % Catalyst T 40)1%
Pot Life (up to 60000 mPa.s, Mixing ratio wt 4% Catalyst T 37)160minutes
Pot Life (up to 60000 mPa.s, Mixing ratio wt 4 % Catalyst T 40)35minutes
Cured Properties
ValueUnitsTest Method / Conditions
Density (in water, at 23°C)1.27g/cm³ISO 2781
Elongation (at break)120%ISO 37
Shore Hardness A55ISO 868
Tear Strength3N/mmASTM D 624 B
Tensile Strength4.5N/mm²ISO 37
Properties
  • Excellent flow
  • High hardness

Regulatory & Compliance

Certifications & Compliance

Safety & Health

Safety Note
  • Being a condensation-curing silicone rubber, ELASTOSIL® RT 563 contains only constituents that over many years have proved to be neither toxic nor aggressive. Special handling precautions are therefore not required, i.e., only the general industrial hygiene regulations apply.
  • Catalysts T 37 and T 40 contain a tetraorganotin compound, are flammable and may cause irritation in contact with the eyes and skin. Adequate protective measures are required.

Packaging & Availability

Country Availability
Regional Availability
  • Africa
  • Asia
  • Europe
  • Latin America
  • Middle East
  • North America
  • Oceania