Bluesil RTV 3450 B black (2.5 kg)
BLUESIL RTV 3450 B Black (2.5 kg) — Platinum catalyst for RTV 3450.
BLUESIL RTV 3450 B Black — Platinum catalyst.
2.5 kg container. Mix at a ratio of 10 : 100 with the base. Black version — chemically identical to the other color variant. Shipped from our Swiss warehouse.
documents
Internal reference:
40-2303.KE
HS code:
39100000
BLUESIL RTV 34xx Series – addition-curing mold-making silicones with a range of hardness levels
The BLUESIL RTV 34xx family is Elkem’s range of two-component, polyaddition-curing silicone elastomers for mold making and prototyping. All variants are platinum-cured and cure at room temperature without off-gassing —the mold shrinks only minimally (0.1%), the material is chemically and thermally resistant, and the detail resolution is in the submicrometer range.
The key difference between the variants is the Shore A hardness, which ranges from 12 (very soft, for pad printing pads) to 50 (hard, for durable production molds). Choose the appropriate variant based on your application:
| Variant | Shore A | pot life | Demold | main use |
|---|---|---|---|---|
| RTV 3410 QC | 12 | 10 min | 30–40 min | Pad printing pads, tile rollers |
| RTV 3428 | 28 | 60 min | 4:00 p.m. | Composite molds (aerospace, boat building) |
| RTV 3430 SB | 28 | 180 minutes | 24 hours | Self-bleeding, delicate reproduction |
| RTV 3440 | 40 | 90 min | 6 hours | Standard mold, quick demolding |
| RTV 3445 | 45 | 60 min | 24 hours | medium-hard, lower mixing viscosity |
| RTV 3450 | 50 | 90 min | 4:00 p.m. | The toughest version, production molds |
Materials that can be cast include plaster, wax, polyester, polyurethane, epoxy, low-melting-point metals, and many other casting materials.
What's in this container?
Catalyst Component B (low-viscosity liquid). Add in a 1:10 ratio to Base A. 2.5 kg container of catalyst, black.
BLUESIL RTV 3450 in detail
BLUESIL RTV 3450 is the hardest variant in the 34xx family (Shore A 50) and the most popular choice for durable production molds. With a tensile strength of 5 MPa and an elongation at break of 300%, the mold experiences less deformation due to its high hardness and delivers consistent dimensions across many castings. Catalyst B is available in black or clear.
The QC (Quick Cure) variant reduces the pot life to 20 minutes and the demolding time to 4 hours—ideal for industrial production with multiple cycle rotations. The mechanical properties are identical to those of the standard 3450.
Typical applications
- Durable production molds capable of producing hundreds to thousands of castings
- Standard reproduction for plaster, wax, polyester, and low-melting-point metals
- Small-batch industrial production with consistent precision
Catalyst color: Black or Clear
Both color options are chemically identical—the choice is based on aesthetics and practicality: Black produces a dark vulcanized material that makes details stand out under light; Transparent allows visibility through the mold, which is helpful for complex casting geometries.
Inhibition Warning
Platinum-cured RTVs are inhibited in trace amounts by:
- Natural or synthetic rubber containing sulfur (natural rubber, NBR, neoprene gloves)
- Metal-salt-catalyzed condensation RTV (tin)
- Tin-stabilized PVC
- Epoxides cured with amines
- Certain organic solvents (ketones, alcohols, ethers)
Practical advice: Set aside a separate venting chamber for addition-cure RTV; if in doubt, conduct a preliminary test at a test site.
storage
Can be stored for up to 12 months in unopened original packaging at temperatures between −10°C and +30°C.
BLUESIL RTV 3450 B Black (2.5 kg) is supplied by SILITECH AG with technical support, a batch certificate, and shipping from our Swiss warehouse within 24 hours.
Technische Daten zu Bluesil RTV 3450 B schwarz (2,5 kg)
| product information | |
|---|---|
| manufacturer | Elkem Silicones |
| brand | Bluesil |
| container | 2.5 kg |
| network type | Addition (Platinum) |
| Number of components | 2K (two-component) |
| mixing ratio | 10:1 |
| Additional features | |
|---|---|
| UV resistance | No |
| Areas of application | |
|---|---|
| Main application | Formenbau, Prototyping |
| Physical properties | |
|---|---|
| Paint cured | Black |
| Self-leveling | Yes |
| consistency | Flowable |
| Electrical Properties | |
|---|---|
| Electrical insulation | No |
| product approvals | |
|---|---|
| food contact | No |
| Suitable for medical use | No |
| General | |
|---|---|
| Density (g/cm³) | 1.3 |
| Viskosität unvernetzt (mPa·s) | 40,000 |
| mixing ratio | 10 to 1 |
| Pot life (min) | 90 |
| Entformzeit (min) | 6 |
| Tensile strength (MPa) | 4 |
| Elongation at break (%) | 300 |
| Reißfestigkeit (N/mm) | 9 |
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Frequently Asked Questions About BLUESIL RTV 3450 B Black (2.5 kg)
Answers regarding the application and processing of BLUESIL RTV 3450 B Black (2.5 kg).
All three are addition-cure silicones for mold making that differ in their Shore A hardness: RTV 3440 = 40 (medium-soft), RTV 3445 = 45 (medium), RTV 3450 = 50 (hardest variant). The higher the Shore number, the greater the dimensional stability over many castings—but with less elasticity for complex undercuts.
QC stands for Quick Cure. The QC version of RTV 3450 has a shorter pot life (20 minutes instead of 90 minutes) and demolding time (4 hours instead of 16 hours), while the final properties remain identical (Shore A 50, tensile strength 5 MPa). For series production with multiple cycle rotations per day.
Black and transparent are chemically identical. Black produces a dark vulcanized material in which surface details are more visible under oblique lighting. Transparent allows for visual inspection of the mold—which is helpful for complex molding geometries where there is a risk of air bubbles.
Base A in 1 kg, 5 kg, and 25 kg (plus 200 kg and 1,000 kg bulk containers available upon request). Catalyst B in 100 g, 500 g, and 2.5 kg (or 20 kg drums). The wide range covers all consumption levels, from hobbyists to industrial-scale production.
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product specifications
| product information | |
|---|---|
| manufacturer | Elkem Silicones |
| brand | Bluesil |
| container | 2.5 kg |
| network type | Addition (Platinum) |
| Number of components | 2K (two-component) |
| mixing ratio | 10:1 |
| Additional features | |
|---|---|
| UV resistance | No |
| Areas of application | |
|---|---|
| Main application | Mold making or Prototyping |
| Physical properties | |
|---|---|
| Paint cured | Black |
| Self-leveling | Yes |
| consistency | Flowable |
| Electrical Properties | |
|---|---|
| Electrical insulation | No |
| product approvals | |
|---|---|
| food contact | No |
| Suitable for medical use | No |
| Uncategorized | |
|---|---|
| Density (g/cm³) | 1.3 |
| Viskosität unvernetzt (mPa·s) | 40,000 |
| mixing ratio | 10 to 1 |
| Pot life (min) | 90 |
| Entformzeit (min) | 6 |
| Tensile strength (MPa) | 4 |
| Elongation at break (%) | 300 |
| Reißfestigkeit (N/mm) | 9 |
| keywords | |
|---|---|
| keywords | |
| Mechanical properties | |
|---|---|
| Linear shrinkage | < 0.1% |
| processing | |
|---|---|
| Viscosity Comp. B | 200 mPa·s |
| Pot life at 23°C | 90.0 min |
| demolding time | 960.0 min |
| Physical & Thermal | |
|---|---|
| Density (23°C) | 1.1 g/cm³ |
| Temperature resistance (duration) | -55 to 200 °C |
| Peak temperature (short-term) | 200 °C |
| storage | |
|---|---|
| Shelf life in original packaging | 12 months |
| Storage temperature | -10 to 30 °C |