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BLUESIL RTV 147 A (200 kg)

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High-viscosity 2K-Pt silicone potting compound for thermal insulation, flexible insulating materials and electrotechnical embedding.

High-viscosity 2K-Pt silicone potting compound (Shore A 60, beige/blue) for thermal insulation, flexible insulating materials and electrotechnical embedding — peak temperature +300 °C

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  • Manufacturer
  • Mixing ratio
  • Networking type
  • Container
  • Number of components
  • consistency
  • Mixing ratio
  • UV resistance
  • Paint has hardened
  • Self-leveling
  • Density (g/cm³)
  • Viscosity uncrosslinked (mPa·s)
  • Electrical insulation
  • Potting time (min)
  • Demolding time (min)
  • Food contact
  • Suitable for medical use
  • Tensile strength (MPa)
  • Elongation at break (%)
  • Tensile strength (N/mm)

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High-temperature resistant silicone BLUESIL 2K silicone ELKEM Industrial Swiss warehouse +300°C Electrical insulation RTV Addition Platinum Electronic potting base component Protective coating RTV 147 hard Shore A 60 beige 200 kg bulk container

 
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. Express logistics. Fast and reliable within Switzerland & Europe.

Shipping from Swiss warehouse within 24 hours. Batch certificate. Invoice within 30 days (B2B). Technical support.
Shipping & Delivery

Usually 1 to 3 working days

Availability will be confirmed after order receipt.

Express logistics within Switzerland & Europe.

General Terms and Conditions →

Product data

Internal reference: 40.906A.FA.K200

HS code: 39100000

Internal reference: 40.906A.FA.K200
HS code: 39100000

BLUESIL RTV 147 A (200 kg)
BLUESIL RTV 147 A (200 kg)
Bluesil · Elkem Silicones · SKU 40.906A.FA.K200

Bluesil RTV 147 A & B is a high-viscosity 2K-Pt silicone potting compound (Shore A 60, beige/blue) for thermal insulation, flexible insulating materials and electrotechnical embedding — peak temperature +300 °C.

This product range comprises 2K polyaddition silicone elastomers with very high temperature resistance (peak up to +300 °C) for thermal insulation, flexible insulating materials, and high-performance electrotechnical embedding. RTV 147 is tailored to specific industrial applications—the most important properties and areas of application are listed below.

Very high temperature resistance (+300 °C)

Bluesil RTV 147 is characterized by very high temperature resistance (peak +300 °C) and high tear resistance (>15 kN/m). RTV 147 A&B can be combined with RTV 148 A&B or a mixture of 147A+148A — thus allowing for medium hardnesses between Shore A 40 and 60.

RTV 147 in numbers
Shore A 60
hardness
+300 °C
Peak temperature.
>15 kN/m
Tear resistance
180 %
Elongation at break

What makes RTV 147 stand out

Very high temperature resistance
+300 °C for short periods, suitable for hot industrial environments.
High tensile strength (>15 kN/m)
Permanently stable shape even under thermal cycling.
High hardness (Shore A 60)
Stable embedding of sensitive components.
Reaction acceleration through heat
Up to 150 °C without blistering — fast processing possible.
Can be combined with RTV 148
Mixture 147A+148A+147B results in medium hardness (Shore A 55).
Good reversibility resistance
High temperature resistance even in enclosed spaces.

What is the RTV 147 used for?

Thermal insulation devices
Thermal insulation in high-temperature applications.
Flexible insulating materials
Electrical and thermal insulation of flexible components.
Molded seals
Custom-made seals for high temperatures.
Electrical engineering embedding
Potting compound for high-performance electrical engineering.
Industrial heating systems
Potting in industrial heating appliances and oven components.
Aerospace embedding
High-temperature components in the aerospace industry.
Data sheets & safety data sheet
Full TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

processing

1
Prepare component
Position in shape — avoid components with Pt-cure inhibitors (sulfur rubber, Sn-RTV).
2
Mix
10:1 by weight. Long pot life (2–4 hours) allows for careful processing.
3
Degas
Vacuum 30–50 mbar.
4
Shed
Slow — highly viscous mixture (10,000–150,000 mPa·s).
5
Curing
24–48 h RT or accelerated by heating — up to +150 °C without bubbling.

Recommended accessories

Bluesil Primer 131
Universal adhesion promoter for stainless steel, aluminum, PMMA and many metals.
View product →
Bluesil Primer PM 820
High-performance primers for polar plastics (PA, PES, ABS, PP) and composites.
View product →
Bluesil Inhibitor 3
Pot life extender for polyaddition silicone systems (Pt-Cure).
View product →

Important instructions

Mixing & Dosage
Stir A and B thoroughly before each use. Use precise dosage in the specified ratio (see table above) — ideally by weight. Incorrect dosage will result in incomplete cross-linking.
Degassing
Degas the mixture under a vacuum of 30–50 mbar. The material expands 3–4 times, then contracts back to its original size after 5–10 minutes. Interrupt the vacuum several times for better degassing.
Avoid inhibitors
Polyaddition silicones are inhibited by: sulfur-vulcanized rubber, tin-catalyzed RTV, amine epoxides, and PVC with tin salts. If in doubt, conduct a preliminary test.
Application advice
SILITECH will advise you on the optimal RTV variant for your application — substrate, hardness, pot life, mechanics. Contact us with your specific application details.

RTV 147 compared to related RTV products

Networking system, mechanics, and processing times side by side — all values ​​from the official Elkem TDS. “— " = not specified in the datasheet.

RTV 147
Current product		 RTV 148 →RTV 141 →RTV 8352 LV →
Networking system2K Polyaddition (Pt)2K Polyaddition (Pt)2K Polyaddition (Pt)2K Polyaddition (Pt)
Mixing ratio10 : 110 : 1 (with RTV 147 B)10 : 11 : 1
ColorBeige / light blue (B)Beige / light blue (B)Transparent, colorlessWhitish
Shore A hardnessA 60A 40A 50A 55
Elongation at break180 %160 %120 %78 %
Tensile strength6 MPa3.5 MPa6 MPa2.3 MPa
Tear resistance>15 kN/m———
Potting time2 h4 h4 h130 min
demolding time24–48 h24–48 h24–48 h8 h
Mixed viscosity150,000 mPa·s10,000 mPa·s4,000 mPa·s2,200 mPa·s
Main applicationThermal insulation devicesLow-viscosity, high-temperature potting compoundOptoelectronic connectionsElectrical Engineering Encapsulation
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
High-temperature resistant silicone BLUESIL 2K silicone ELKEM Industrial Swiss warehouse +300°C Electrical insulation RTV Addition Platinum Electronic potting base component Protective coating RTV 147 hard Shore A 60 beige 200 kg bulk container

Technical data for BLUESIL RTV 147 A (200 kg)

All 21 product information 8 Further properties 1 Physical properties 4 Electrical properties 1 Curing values ​​2 Product approvals 2 Mechanical properties 3
Product information
brand Bluesil
Manufacturer Elkem Silicones
Mixing ratio 10 : 1
Networking type Addition (Platinum)
Container 200 kg
Number of components 2K (two-component)
consistency Thixotropic
Mixing ratio 10:1
Other features
UV resistance No
Physical properties
Paint has hardened Beige
Self-leveling No
Density (g/cm³) 1.08
Viscosity uncrosslinked (mPa·s) 50'000
Electrical properties
Electrical insulation Yes
Curing values
Potting time (min) 75
Demolding time (min) 24
Product approvals
Food contact No
Suitable for medical use No
Mechanical properties
Tensile strength (MPa) 5.5
Elongation at break (%) 350
Tensile strength (N/mm) 22

For binding values, please refer to the technical data sheet (TDS) in the "Documents" tab.

Documents and datasheets

Click on a document for a preview or the download icon for a direct download.

Technical Data Sheets (TDS) 3
Bluesil RTV 147 A - Technical Data Sheet DE.pdf
192 KB
Bluesil RTV 147 A - Technical Data Sheet EN.pdf
93 KB
Bluesil RTV 147 A - Fiche Technique FR.pdf
201 KB
Safety Data Sheets (SDS) 3
Bluesil RTV 147 A - Safety Data Sheet DE.pdf
273 KB
Bluesil RTV 147 A - Fiche de Sécurité FR.pdf
475 KB
Bluesil RTV 147 A - Scheda di Sicurezza IT.pdf
468 KB

Frequently asked questions about RTV 147

Practical questions regarding processing and design — answered by SILITECH.

Bluesil RTV 147 A & B: High-viscosity 2K-Pt silicone potting compound (Shore A 60, beige/blue) for thermal insulation, flexible insulation materials, and electrotechnical embedding — peak temperature +300 °C. Main applications include thermal insulation devices, flexible insulation materials, and molded gaskets.

Polyaddition crosslinking is a two-component silicone chemistry using a platinum catalyst. Component A contains the platinum complex, and component B contains the SiH crosslinker. When mixed, the components crosslink without releasing reaction byproducts—no shrinkage due to outgassing, excellent dimensional accuracy, and low linear shrinkage. Important: Polyaddition silicones are inhibited by various substances—sulfur-vulcanized natural rubbers, tin-catalyzed RTV silicones, amine-catalyzed epoxy resins, and tin-stabilized PVC. In case of doubt, a preliminary test should be carried out.

Thoroughly stir components A and B before each processing step. Measure precisely according to the mixing ratio specified in the TDS (see comparison table above) – ideally by weight. Mix with an electric or pneumatic agitator at low speed (minimize air entrainment). Degas the mixture under vacuum (30–50 mbar) – the material will expand 3–4 times its original volume, bubbles will escape, and the material will settle back after 5–10 minutes. Then slowly pour into the mold from the lowest point to avoid air entrapment. For polyaddition systems, avoid contact with inhibitors (sulfur-based rubber, tin-based RTV, amine epoxides, PVC with tin salts).

Store in the unopened original container in a dry, cool place — typically between +5 and +30 °C, see TDS for exact values. Store components A and B separately; seal airtight after opening. Polyaddition systems are insensitive to moisture, but should be stored in a cool place to maintain pot life. Consult the Safety Data Sheet (SDS) before use.

The comparison table above lists related RTV products with different hardnesses, pot lives, or application profiles. If you are unsure which product is best for you, we would be happy to advise you — contact SILITECH with details of your application (substrate, desired hardness, processing time, mechanical requirements, and durability).

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Product specifications

Product information
brand Bluesil
Manufacturer Elkem Silicones
Mixing ratio 10 : 1
Networking type Addition (Platinum)
Container 200 kg
Number of components 2K (two-component)
consistency Thixotropic
Mixing ratio 10:1
Other features
UV resistance No
Physical properties
Paint has hardened Beige
Self-leveling No
Density (g/cm³) 1.08
Viscosity uncrosslinked (mPa·s) 50'000
Electrical properties
Electrical insulation Yes
Curing values
Potting time (min) 75
Demolding time (min) 24
Product approvals
Food contact No
Suitable for medical use No
Mechanical properties
Tensile strength (MPa) 5.5
Elongation at break (%) 350
Tensile strength (N/mm) 22
Keywords
Keywords
High-temperature resistant silicone BLUESIL 2K silicone ELKEM Industrial Swiss warehouse +300°C Electrical insulation RTV Addition Platinum Electronic potting base component Protective coating RTV 147 hard Shore A 60 beige 200 kg bulk container
Mechanical properties
Shore hardness A60.0 Shore A
Modulus at 100% elongation3.2 MPa
Tensile strength6.0 MPa
Elongation at break180.0 %
Tear resistance15.0 kN/m
Linear shrinkage< 0.1 %
processing
Viscosity of mixture150,000 mPa·s
Viscosity Comp. A150,000 mPa·s
Viscosity Comp. B10,000 mPa·s
Pot life at 23°C120.0 min
demolding time2160.0 min
Physical & Thermal
Density (23°C)1.24 g/cm³
Temperature resistance (duration)-70 to 250 °C
Peak temperature (short-term)300 °C
thermal conductivity0.31 W/(m·K)
Electrical characteristics
Dielectric constant ε (1 kHz)2.9
Dielectric strength18.0 kV/mm
Contact resistance5e+14 Ω·cm
Loss factor tan δ0.003
storage
Shelf life in original packaging18 months
Storage temperature-20 to 30 °C

Documents and datasheets

Safety Data Sheets (SDS) and Technical Data Sheets (TDS) are available for download: