ELASTOSIL® RT 607 A/B

1 of 36 products in this brand
ELASTOSIL® RT 607 A/B is a pourable, addition-curing RTV-2 silicone rubber with a two-part formulation and a 9:1 mixing ratio. It has low viscosity and offers rapid heat cure. The cured rubber exhibits high hardness and excellent heat stability. Additionally, it is flame retardant, making it suitable for general purpose encapsulation. This product can also be used as a potting material for electrical coils of lifting magnets and for slot exit potting of electrical coils.

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

Cure Method: Air Dry, Chemical Cure, Heat Cure

Chemical Family: Silicones

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Special Features
  • Addition Curing
  • Flame retardant
  • Flowable
  • Heat resistant
  • Low viscosity

Applications & Uses

Applications
  • Electrics & Electronics
  • Encapsulation
  • Hydroelectric Power Plants
  • Railway Industry
Application Details
  • General purpose encapsulant
  • Potting material for electrical coils of lifting magnets
  • Slot exit potting for electrical coils

Processing
 

Caution:

Only components A and B with the same lot number may be processed together. To ensure homogeneity of the material, the components must be stirred thoroughly before they are removed or processed in their containers, in order to uniformly disperse any filler that might have settled during storage.

Surface preparation:

  • All surfaces must be clean and free of contaminants that will inhibit the cure of ELASTOSIL® RT 607 A/B. Examples of inhibiting contaminants are sulfur containing materials, plasticizers, urethanes, amine containing materials and organometallic compounds - especially organotin compounds. If a substrate's ability to inhibit cure is unknown, a small scale test should be run to determine compatibility.

Mixing:

  • Component A of ELASTOSIL® RT 607 contains the platinum catalyst, component B the crosslinker. Even traces of the platinum catalyst may cause gelling of the component containing the crosslinker.
  • Therefore tools (spatula, stirrers, etc.) used for handling the platinumcontaining component or the catalyzed compound must not come into contact with this component. The two components should be thoroughly mixed at a 9 : 1 ratio by weight. To eliminate any air introduced during dispensing or trapped under components or devices a vacuum encapsulation is recommended.

Curing:

  • Curing time of addition curing silicone rubber is highly dependent on temperature, size and heat sink properties of the component being potted.
  • The reactivity can be adjusted within wide limits by adding Catalyst EP or Inhibitor PT 88 to suit the processing requirements of the particular application.
  • Catalyst EP increases the reactivity, i. e., pot life and curing time are reduced. Inhibitor PT 88 is a pot life extender and prolongs pot life and curing time.

 

Temperature

Curing time, thickness 1 cm

23 °C 24 h
100 °C 10 min
150 °C 5 min

Properties

Catalyst Properties
ValueUnitsTest Method / Conditions
Dynamic Viscosity (at 23°C, of mix)10000mPa·sDIN EN ISO 3219
Mix Ratio (A:B)9:1 parts by weight
Platinum Catalyst in ComponentComponent A
Pot Life (at 25°C, Dynamic Viscosity up to 100000 mPa.s (Brookfield: spindle 5, 2.5 rpm))80minutesDIN EN ISO 2555
Cured Properties
ValueUnitsTest Method / Conditions
Density (at 23°C)1.43g/cm³ISO 1183-1 A
Elongation (at break)100%ISO 37 Type 1
Permittivity3.7IEC 62631-2-1
Shore Hardness A55DIN ISO 48-4
Tensile Strength3N/mm²ISO 37 Type 1
Volume Resistivity10¹⁴ Ohm-cmIEC 62631-3-1
Uncured Properties
ValueUnitsTest Method / Conditions
Density (at 23°C, Componenet A)1.5g/cm³DIN EN ISO 2811-1
Density (at 23°C, Componenet B)0.97g/cm³DIN EN ISO 2811-1
Dynamic Viscosity (Component A, at 23°C)15000mPa·sDIN EN ISO 3219
Dynamic Viscosity (Component B, at 23°C)200mPa·sDIN EN ISO 3219
Properties
  • Two-part, 9 : 1 Mixing Ratio
  • Low Viscosity
  • Rapid Heat Cure
  • High Hardness
  • Excellent Heat Stability
  • Flame Retardant
Note

Cured properties are cured for 30 min at 150 °C in a circulating air oven.

Regulatory & Compliance

Certifications & Compliance
Quality Standards
Compliance

Meets the requirements of EN 45545-2:2020 for Hazard Level HL1, HL2 and HL3, as per requirement set R22, R23 and R24.

Safety & Health

Safety Note

According to the latest findings, the addition-curing silicone rubber ELASTOSIL® RT 607 A/B contains neither toxic or corrosive substances which would require special handling precautions.

Packaging & Availability

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