Silicones, silicone oils, sprays
Casting and potting resins)
Internal reference:
40-907A.KE.K025
HS code:
39100000
Technical Data
Typical values, not a specification. The technical data sheet (TDS) is binding.
Mechanical properties
- Shore hardness A
- 40 Shore A
- Module at 100% elongation
- 2.2 MPa
- Tensile Strength
- 3.5 MPa
- Elongation at break
- 160 %
- Linear shrinkage
- < 0.1 %
Processing
- Viscosity of Mixture
- 10’000 mPa·s
- Viscosity Component A
- 10’000 mPa·s
- Viscosity Component B
- 10’000 mPa·s
- Pot life at 23 °C
- 240 min
- Demolding time
- 2,160 min
Physical and thermal
- Density (23 °C)
- 1.23 g/cm³
- Temperature resistance (duration)
- -70 to 250 °C
- Peak temperature (briefly)
- 300 °C
- Thermal conductivity
- 0.31 W/(m·K)
Electrical characteristics
- Dielectric strength
- 18 kV/mm
- Volume resistivity
- 5 × 10¹⁴ Ω·cm
- Dielectric constant ε (1 kHz)
- 2.9
- Dissipation factor tan δ
- 0.003
Storage
- Shelf life in original packaging
- 18 months
- Storage Temperature
- -20 to 30 °C
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
Product Description
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.
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.