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BLUESIL RTV 3041 B

BLUESIL RTV 3041 B

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Transparent 2K addition silicone rubber for high-precision reproduction of 3D objects.

Transparent 2K addition silicone rubber (Pt) for the high-precision reproduction of 3D objects — also available in the SB (self-bleeding) version

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  • brand
  • 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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Epoxy Transparent Mold Making Silicone Hardener BLUESIL Polyester Molding Silicone 2K Silicone ELKEM Swiss Bearing RTV Addition Platinum Catalyst Prototyping Polyurethane 3D Reproduction Standard RTV 3041 Jewelry Making Wax

 
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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: 40-3041B

HS code: 39100000

Internal reference: 40-3041B
HS code: 39100000

BLUESIL RTV 3041 B
BLUESIL RTV 3041 B
Bluesil Elkem Silicones SKU 40-3041B​

Bluesil RTV 3041 A & B is a transparent 2K addition silicone rubber (Pt) for the high-precision reproduction of 3D objects — also available in the SB (Self-Bleeding) variant.

This product line comprises 2K polyaddition silicone elastomers (platinum-catalyzed) for mold making — without reaction byproducts, offering excellent detail reproduction and reusability. RTV 3041 is tailored to specific industrial applications — the most important properties and areas of application are listed below.

Highly transparent + self-bleeding variant

Bluesil RTV 3041 combines excellent transparency with outstanding mechanical properties. The SB (Self-Bleeding) variant allows trapped air bubbles to escape automatically—ideal when vacuum venting is not possible.

RTV 3041 in figures
Transparent
optics
Shore A 38
hardness
350 %
Elongation at break
22 N/mm
Tear resistance

What distinguishes the RTV 3041

Excellent transparency
Clear view of the model during casting — important for visible detail control.
Self-bleeding variant (SB)
RTV 3041 SB B removes trapped air automatically — no vacuum degassing required.
Exceptional mechanics
Tensile strength 22 N/mm, elongation at break 350 % — long shape life.
High-resolution reproduction
Suitable for complex 3D objects made of PU, wax, foam, epoxy, polyester.
Long processing time (75 min)
Careful, slow pouring even with large molds.
Freely combinable in the series
Bluesil RTV 3041 can be coordinated with other Bluesil products within the series.

What is the RTV 3041 used for?

Reproduction of PU components
Reproducing 3D polyurethane objects in series.
Wax and foam reproduction
Detailed reproduction of soft originals.
Epoxy resin replicas
Reproduction of epoxy models for prototypes and production.
Polyester castings
Molding tool for polyester composites.
Visual inspection applications
Transparent form for direct observation of the pouring process.
Self-service application without vacuum
Processing without a vacuum chamber thanks to the self-bleeding variant.
Data sheets & safety data sheet
Full TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

processing

1
Stir A and B separately
Stir both components thoroughly before each processing step — avoid sedimentation.
2
Mix in the correct proportions
Dose by weight (see comparison table: 10:1 or 1:1). Homogenize thoroughly with a low-speed mixer.
3
Degas in a vacuum
30–50 mbar vacuum — material expands 3–4 times, bubbles escape, collapses after 5–10 min. Interrupt the vacuum several times for better degassing.
4
Pour slowly
Pour slowly from the lowest point of the mold – this prevents air entrapment. Avoid inhibitors when using polyaddition (sulfur rubber, Sn-RTV, amine epoxides, PVC).
5
Allow to harden
Demoldable at 23 °C after demolding time (see TDS). Heat accelerates demolding — at higher temperatures the dimensions may change.
6
demolding
Carefully remove from the mold, separating the mold halves if necessary. Clean the mold before recasting — release agents are usually not required.

Recommended accessories

Bluesil Inhibitor 3
Pot life extender for polyaddition silicone systems (Pt-Cure).
View product →
Bluesil Fluid 47 V 50
PDMS thinner / plasticizer for Bluesil RTV systems.
View product →
Bluesil ADD 11013
Thixotropy additive for Bluesil RTV 3428 (polyaddition) — vertical application.
View product →
Bluesil Primer 131
Universal adhesion promoter for stainless steel, aluminum, PMMA and many metals.
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 3041 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 3041
Current product		 RTV 3040 →RTV 3450 →RTV 3440 →
Networking system2K Polyaddition (Pt)2K Polyaddition (Pt)2K Polyaddition (Pt)2K Polyaddition (Pt)
Mixing ratio10 : 110 : 110 : 110 : 1
ColorTransparentClear to straw yellowBeige / black / translucentBeige / blue (B)
Shore A hardnessA 38A 38A 50A 40
Elongation at break350 %340 %300 %300 %
Tensile strength5.5 MPa6.3 MPa5 MPa4 MPa
Tear resistance22 N/mm21 N/mm8 N/mm9 N/mm
Potting time75 min60 min90 min90 min
demolding time<24 h24 h16 h6 h
Mixed viscosity42,000 mPa·s40,000 mPa·s15,000 mPa·s15,000 mPa·s
Main applicationReproduction of PU componentsConventional production and prototype formsHigh-stress tool moldsPlaster reproduction
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
Epoxy Transparent Mold Making Silicone Hardener BLUESIL Polyester Molding Silicone 2K Silicone ELKEM Swiss Bearing RTV Addition Platinum Catalyst Prototyping Polyurethane 3D Reproduction Standard RTV 3041 Jewelry Making Wax

Technical data for BLUESIL RTV 3041 B

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 100 g, 2 kg, 20 kg
Number of components 2K (two-component)
consistency Flowable
Mixing ratio 10:1
Other features
UV resistance No
Physical properties
Paint has hardened Transparent
Self-leveling Yes
Density (g/cm³) 1.08
Viscosity uncrosslinked (mPa·s) 50'000
Electrical properties
Electrical insulation No
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) 1
Bluesil RTV 3041 B E5 - Technical Data Sheet EN.pdf
637 KB
Safety Data Sheets (SDS) 3
Bluesil RTV 3041 B E5 - Safety Data Sheet DE.pdf
298 KB
Bluesil RTV 3041 B E5 - Fiche de Sécurité FR.pdf
502 KB
Bluesil RTV 3041 B E5 - Scheda di Sicurezza IT.pdf
495 KB

Frequently asked questions about RTV 3041

Practical questions regarding processing and design — answered by SILITECH.

Bluesil RTV 3041 A & B: Transparent 2K addition silicone rubber (Pt) for the high-precision reproduction of 3D objects — also available in a self-bleeding (SB) version. Main applications include the reproduction of PU components, wax and foam reproduction, and epoxy resin replicas.

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
Container 100 g or 2 kg or 20 kg
brand Bluesil
Manufacturer Elkem Silicones
Mixing ratio 10 : 1
Networking type Addition (Platinum)
Number of components 2K (two-component)
consistency Flowable
Mixing ratio 10:1
Other features
UV resistance No
Physical properties
Paint has hardened Transparent
Self-leveling Yes
Density (g/cm³) 1.08
Viscosity uncrosslinked (mPa·s) 50'000
Electrical properties
Electrical insulation No
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
Epoxy Transparent Mold Making Silicone Hardener BLUESIL Polyester Molding Silicone 2K Silicone ELKEM Swiss Bearing RTV Addition Platinum Catalyst Prototyping Polyurethane 3D Reproduction Standard RTV 3041 Jewelry Making Wax
Mechanical properties
Linear shrinkage< 0.1 %
processing
Viscosity of mixture42,000 mPa·s
Viscosity Comp. A50,000 mPa·s
Viscosity Comp. B6,000 mPa·s
Physical & Thermal
Density (23°C)1.03 g/cm³
Temperature resistance (duration)-54 to 204 °C
Peak temperature (short-term)204 °C
storage
Shelf life in original packaging12 months
Storage temperature-10 to 30 °C

Documents and datasheets

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