)
)
)
)
BLUESIL RTV 147 A (25kg)
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
Documents
Internal reference:
40.906A.KE.K025
HS code:
39100000
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.
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.
What makes RTV 147 stand out
What is the RTV 147 used for?
processing
Recommended accessories
Important instructions
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 system | 2K Polyaddition (Pt) | 2K Polyaddition (Pt) | 2K Polyaddition (Pt) | 2K Polyaddition (Pt) |
| Mixing ratio | 10 : 1 | 10 : 1 (with RTV 147 B) | 10 : 1 | 1 : 1 |
| Color | Beige / light blue (B) | Beige / light blue (B) | Transparent, colorless | Whitish |
| Shore A hardness | A 60 | A 40 | A 50 | A 55 |
| Elongation at break | 180 % | 160 % | 120 % | 78 % |
| Tensile strength | 6 MPa | 3.5 MPa | 6 MPa | 2.3 MPa |
| Tear resistance | >15 kN/m | — | — | — |
| Potting time | 2 h | 4 h | 4 h | 130 min |
| demolding time | 24–48 h | 24–48 h | 24–48 h | 8 h |
| Mixed viscosity | 150,000 mPa·s | 10,000 mPa·s | 4,000 mPa·s | 2,200 mPa·s |
| Main application | Thermal insulation devices | Low-viscosity, high-temperature potting compound | Optoelectronic connections | Electrical Engineering Encapsulation |
Technical data for BLUESIL RTV 147 A (25kg)
| Product information | |
|---|---|
| brand | Bluesil |
| Manufacturer | Elkem Silicones |
| Networking type | Addition (Platinum) |
| Container | 25 kg |
| Number of components | 2K (two-component) |
| consistency | Thixotropic |
| Mixing ratio | 10:1 |
| Other features | |
|---|---|
| UV resistance | No |
| Physical properties | |
|---|---|
| Paint has hardened | Blue |
| Self-leveling | No |
| Viscosity uncrosslinked (mPa·s) | 10'000 |
| Electrical properties | |
|---|---|
| Electrical insulation | Yes |
| Product approvals | |
|---|---|
| Food contact | No |
| Suitable for medical use | No |
| Mechanical properties | |
|---|---|
| Tensile strength (MPa) | 6 |
| Elongation at break (%) | 3 |
| Tensile strength (N/mm) | 15 |
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
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).
Your question isn't listed here
Our technical team will advise you personally on material selection, processing questions, and individual requirements. Quickly and competently.
Product specifications
| Product information | |
|---|---|
| brand | Bluesil |
| Manufacturer | Elkem Silicones |
| Networking type | Addition (Platinum) |
| Container | 25 kg |
| Number of components | 2K (two-component) |
| consistency | Thixotropic |
| Mixing ratio | 10:1 |
| Other features | |
|---|---|
| UV resistance | No |
| Physical properties | |
|---|---|
| Paint has hardened | Blue |
| Self-leveling | No |
| Viscosity uncrosslinked (mPa·s) | 10'000 |
| Electrical properties | |
|---|---|
| Electrical insulation | Yes |
| Product approvals | |
|---|---|
| Food contact | No |
| Suitable for medical use | No |
| Mechanical properties | |
|---|---|
| Tensile strength (MPa) | 6 |
| Elongation at break (%) | 3 |
| Tensile strength (N/mm) | 15 |
| Keywords | |
|---|---|
| Keywords | |
| Mechanical properties | |
|---|---|
| Shore hardness A | 60.0 Shore A |
| Modulus at 100% elongation | 3.2 MPa |
| Tensile strength | 6.0 MPa |
| Elongation at break | 180.0 % |
| Tear resistance | 15.0 kN/m |
| Linear shrinkage | < 0.1 % |
| processing | |
|---|---|
| Viscosity of mixture | 150,000 mPa·s |
| Viscosity Comp. A | 150,000 mPa·s |
| Viscosity Comp. B | 10,000 mPa·s |
| Pot life at 23°C | 120.0 min |
| demolding time | 2160.0 min |
| Physical & Thermal | |
|---|---|
| Density (23°C) | 1.24 g/cm³ |
| Temperature resistance (duration) | -70 to 250 °C |
| Peak temperature (short-term) | 300 °C |
| thermal conductivity | 0.31 W/(m·K) |
| Electrical characteristics | |
|---|---|
| Dielectric constant ε (1 kHz) | 2.9 |
| Dielectric strength | 18.0 kV/mm |
| Contact resistance | 5e+14 Ω·cm |
| Loss factor tan δ | 0.003 |
| storage | |
|---|---|
| Shelf life in original packaging | 18 months |
| Storage temperature | -20 to 30 °C |
Documents and datasheets
Safety Data Sheets (SDS) and Technical Data Sheets (TDS) are available for download:
- Bluesil RTV 147 A - Fiche Technique FR.pdf (201 KB)
- Bluesil RTV 147 A - Fiche de Sécurité FR.pdf (475 KB)
- Bluesil RTV 147 A - Scheda di Sicurezza IT.pdf (468 KB)
- Bluesil RTV 147 A - Safety Data Sheet DE.pdf (273 KB)
- Bluesil RTV 147 A - Technical Data Sheet EN.pdf (93 KB)
- Bluesil RTV 147 A - Technical Data Sheet DE.pdf (192 KB)