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BLUESIL RTV 148 A (25 kg)
Addition-curing RTV-2 silicone, mixing ratio 10:1. Production of thermal protective elements, flexible molded parts and insulators as well as form gaskets, in addition to potting of electrical systems.
BLUESIL RTV 148 A is the A component of an addition-curing, two-component silicone rubber and is cross-linked with BLUESIL RTV 147 B. Mixing it with RTV 147 A allows for the production of rubbers with medium hardness. The compound cures elastically at room temperature without generating heat of reaction; heating up to 150 °C accelerates the cross-linking process without blistering. Applications include thermal insulation devices, flexible insulating materials, molded gaskets, and investment materials for electrical engineering.
Documents
Internal reference:
40-907A.KE.K025
HS code:
39100000
BLUESIL RTV 148 A&B (with hardener 147 B) is a two-component, addition-curing RTV-2 silicone that cures at room temperature to a softer (Shore A 40), heat-resistant elastomer.
RTV 148 A has a significantly lower viscosity than RTV 147 A at approx. 10,000 mPa·s and is processed with hardener RTV 147 B in a ratio of 100:10. RTV 147 A and 148 A can be mixed in any proportion to adjust hardness.
Low-viscosity, addition-curing RTV-2 silicone with a soft formulation (Shore A 40), excellent thermal stability, and good pouring and deaeration properties, designed for thermal protection and flexible insulators.
What sets RTV 148 apart
What is RTV 148 used for?
Processing
Important Notes
- Addition curing is sensitive to inhibition: avoid sulfur-containing rubbers, metal-salt-catalyzed RTV, tin-stabilized PVC, and amine-crosslinked epoxides; if in doubt, test beforehand.
- Viscosity can be reduced by up to 10% with BLUESIL FLD 47V100 before curing. Linear shrinkage approx. 0.1% at room temperature.
- The currently valid Elkem data sheet (TDS and SDS) is authoritative, which we will be happy to send you.
Technical data for BLUESIL RTV 148 A (25 kg)
| Product Information | |
|---|---|
| Brand | Bluesil |
| Manufacturer | Elkem Silicones |
| Curing type | Addition (Platinum) |
| Container | 25 kg |
| Number of components | 2K (two-component) |
| Consistency | Flowable |
| Mixing Ratio | 10:1 |
| Further Properties | |
|---|---|
| UV resistance | No |
| Physical Properties | |
|---|---|
| Cured Color | Beige |
| Self-leveling | Yes |
| Electrical Properties | |
|---|---|
| Electrical Insulation | Yes |
| Product Approvals | |
|---|---|
| Food contact | No |
| Medical grade | No |
| Mechanical properties | |
|---|---|
| Tensile strength (MPa) | 6 |
| Elongation at break (%) | 3 |
| Tear strength (N/mm) | 15 |
Please refer to the technical data sheet (TDS) in the "Documents" tab for binding values.
Documents and data sheets
Click on a document for the preview or the download icon for direct download.
Technical Data Sheets (TDS) 3
Frequently Asked Questions about RTV 148
Practical application and design questions, answered by SILITECH.
100 parts RTV 148 A to 10 parts RTV 147 B.
Shore A approx. 40, tensile strength 3.5 MPa, elongation at break 160%.
Peak temperature up to approx. +300 °C, brittle point -70 °C.
Yes, RTV 148 A can be mixed with RTV 147 A in any ratio.
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Product Specifications
| Product Information | |
|---|---|
| Brand | Bluesil |
| Manufacturer | Elkem Silicones |
| Curing type | Addition (Platinum) |
| Container | 25 kg |
| Number of components | 2K (two-component) |
| Consistency | Flowable |
| Mixing Ratio | 10:1 |
| Further Properties | |
|---|---|
| UV resistance | No |
| Physical Properties | |
|---|---|
| Cured Color | Beige |
| Self-leveling | Yes |
| Electrical Properties | |
|---|---|
| Electrical Insulation | Yes |
| Product Approvals | |
|---|---|
| Food contact | No |
| Medical grade | No |
| Mechanical properties | |
|---|---|
| Tensile strength (MPa) | 6 |
| Elongation at break (%) | 3 |
| Tear strength (N/mm) | 15 |
| Keywords | |
|---|---|
| Keywords | |
| Mechanical properties | |
|---|---|
| Shore hardness A | 40.0 Shore A |
| Modulus at 100% Elongation | 2.2 MPa |
| Tensile Strength | 3.5 MPa |
| Elongation at break | 160.0 % |
| Linear shrinkage | < 0.1 % |
| Processing | |
|---|---|
| Viscosity of Mixture | 10’000 mPa·s |
| Viscosity Comp. A | 10’000 mPa·s |
| Viscosity Component B | 10’000 mPa·s |
| Pot life at 23°C | 240.0 min |
| Demolding time | 2160.0 min |
| Physical & Thermal | |
|---|---|
| Density (23°C) | 1.23 g/cm³ |
| Temperature Resistance (Continuous) | -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 |
| Volume resistivity | 5e+14 Ω·cm |
| Dissipation factor tan δ | 0.003 |
| Storage | |
|---|---|
| Shelf life in original packaging | 18 months |
| Storage Temperature | -20 to 30 °C |
Documents and data sheets
Safety Data Sheets (SDS) and Technical Data Sheets (TDS) for download:
- Bluesil RTV 148 A - Fiche Technique FR.pdf (201 KB)
- Bluesil RTV 148 A - Fiche de Sécurité FR.pdf (530 KB)
- Bluesil RTV 148 A - Safety Data Sheet IT.pdf (520 KB)
- Bluesil RTV 148 A - Safety Data Sheet DE.pdf (324 KB)
- Bluesil RTV 148 A - Technical Data Sheet EN.pdf (426 KB)
- Bluesil RTV 148 A - Technical Data Sheet DE.pdf (192 KB)