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BLUESIL RTV 3428 A

BLUESIL RTV 3428 A

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Addition-curing RTV-2 silicone, mixing ratio 10:1, Shore A 28. Production of flexible molds with excellent detail reproduction as well as thermal expansion molds for composite materials.

2K-Pt silicone with exceptionally high elongation at break (600%) and highest tear resistance (20 kN/m) for highly stressed molds

Price on request

  • Brand
  • Manufacturer
  • Curing type
  • Container
  • Number of components
  • Consistency
  • Mixing Ratio
  • UV resistance
  • Cured Color
  • Self-leveling
  • Uncrosslinked viscosity (mPa·s)
  • Electrical Insulation
  • Pot life (min)
  • Demolding time (min)
  • Food contact
  • Medical grade
  • Tensile strength (MPa)
  • Elongation at break (%)
  • Tear strength (N/mm)

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Mold making Silicone BLUESIL 2K silicone ELKEM Swiss stock Aerospace RTV Addition Platinum Base component 20 kg Prototyping RTV 3428 Shore A 28 High elongation High tear strength Composite mold Boat building Thermal Expansion Former Flexible mold

 
General Terms and Conditions

Shipping usually within 1 to 3 business days
(Availability confirmed after order)

Express logistics. Fast and reliable within Switzerland & Europe

From Swiss stock Dispatch within 24h Batch certificate Invoice 30 days (B2B) Technical advice
Shipping & Delivery

Usually 1 to 3 business days

Availability is confirmed after order receipt.

Express logistics within Switzerland & Europe.

Terms and Conditions →

Product data

HS Code: 39100000

HS Code: 39100000

BLUESIL RTV 3428 A
BLUESIL RTV 3428 A
Bluesil · Elkem Silicones ·

RTV 3428: Two-component addition-curing silicone elastomer for room-temperature curing, accelerable by heat.

RTV 3428 belongs to the BLUESIL RTV series from Elkem, the two-component silicones for mold making and impression taking. Technology: Addition-curing (platinum, 2K). Sales segment: All industries / Food..

RTV 3428 at a glance

Two-component addition-curing silicone elastomer for room-temperature curing, accelerable by heat.

RTV 3428 in figures
2K
Addition
A 28
Shore A hardness
10:1
Mixing ratio

What sets RTV 3428 apart

Processing and curing
Easy processing and curing
Elongation and tear strength
very good elongation and tear strength
Linear shrinkage
low linear shrinkage
Part B in
Part B in multiple colors
Positioned as food-grade
positioned as food-contact safe.

What is RTV 3428 used for?

Soft molds with high
Soft molds with high precision and long service life
Thermal expansion cores for composite manufacturing
Thermal expansion cores for composite manufacturing (aerospace, shipbuilding)
Molds for chocolate,
Molds for chocolate, sugar, marzipan, baked goods, and confectionery.
Data sheet and safety data sheet
View or download the Technical Data Sheet (TDS) and Safety Data Sheet (SDS).
To the documents →

Processing

1
Mix components
Mix parts A and B in the specified ratio with minimal air entrapment.
2
Processing
Apply or join within the pot life.
3
Curing
Cure at room temperature, can be accelerated by heat.
4
Check suitability
Before series use, test adhesion and suitability on the component.

Important Notes

  • The currently valid Elkem data sheet (TDS and SDS) is authoritative, which we will be happy to send you.

RTV 3428 in comparison

RTV 3428
Current Product		RTV 3041 →RTV 3325 (+ catalyst) →RTV 3440 / 3445 / 3450 / 3450 QC →
CrosslinkingAdditionAdditionCondensationAddition
Colorwhitetranslucentwhitetranslucent
Shore A28382540 to 50
Duration °Cn.a.n.a.n.a.n.a.
Topics & Application Fields
Key terms related to this product. Also useful for our search and filters.
Mold making Silicone BLUESIL 2K silicone ELKEM Swiss stock Aerospace RTV Addition Platinum Base component 20 kg Prototyping RTV 3428 Shore A 28 High elongation High tear strength Composite mold Boat building Thermal Expansion Former Flexible mold

Technical Data for BLUESIL RTV 3428 A

All 19 Product Information 7 Further Properties 1 Physical Properties 3 Electrical Properties 1 Curing Values 2 Product Approvals 2 Mechanical Properties 3
Product Information
Brand Bluesil
Manufacturer Elkem Silicones
Curing type Addition (Platinum)
Container 20 kg, 200 kg
Number of components 2K (two-component)
Consistency Flowable
Mixing Ratio 10:1
Further Properties
UV resistance No
Physical Properties
Cured Color Transparent
Self-leveling Yes
Uncrosslinked viscosity (mPa·s) 25
Electrical Properties
Electrical Insulation No
Curing values
Pot life (min) 1
Demolding time (min) 16
Product Approvals
Food contact No
Medical grade No
Mechanical properties
Tensile strength (MPa) 7.5
Elongation at break (%) 600
Tear strength (N/mm) 20

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
Bluesil RTV 3428 A - Technical Data Sheet DE.pdf
101 KB
Bluesil RTV 3428 A - Technical Data Sheet EN.pdf
636 KB
Bluesil RTV 3428 A - Fiche Technique FR.pdf
181 KB
Safety Data Sheets (SDS) 3
Bluesil RTV 3428 A - Safety Data Sheet DE.pdf
313 KB
Bluesil RTV 3428 A - Fiche de Sécurité FR.pdf
517 KB
Bluesil RTV 3428 A - Safety Data Sheet IT.pdf
510 KB

Frequently asked questions about RTV 3428

Practical application and design questions, answered by SILITECH.

RTV 3428 is suitable for soft molding with high precision and long service life, thermal expansion cores for composite manufacturing (aerospace, shipbuilding), molds for chocolate, sugar, marzipan, baked goods, and confectionery products.

RTV 3428: Addition-curing (platinum, 2K).

According to the Elkem data sheet, it can be used as a release coating for food contact.

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Product Specifications

Product Information
Container 20 kg or 200 kg
Brand Bluesil
Manufacturer Elkem Silicones
Curing type Addition (Platinum)
Number of components 2K (two-component)
Consistency Flowable
Mixing Ratio 10:1
Further Properties
UV resistance No
Physical Properties
Cured Color Transparent
Self-leveling Yes
Uncrosslinked viscosity (mPa·s) 25
Electrical Properties
Electrical Insulation No
Curing values
Pot life (min) 1
Demolding time (min) 16
Product Approvals
Food contact No
Medical grade No
Mechanical properties
Tensile strength (MPa) 7.5
Elongation at break (%) 600
Tear strength (N/mm) 20
Keywords
Keywords
Mold making Silicone BLUESIL 2K silicone ELKEM Swiss stock Aerospace RTV Addition Platinum Base component 20 kg Prototyping RTV 3428 Shore A 28 High elongation High tear strength Composite mold Boat building Thermal Expansion Former Flexible mold
Mechanical properties
Shore hardness A28.0 Shore A
Tensile Strength7.5 MPa
Elongation at break600.0 %
Tear resistance20.0 kN/m
Linear shrinkage< 0.1 %
Processing
Viscosity Comp. A25’000 mPa·s
Viscosity Component B8’000 mPa·s
Pot life at 23°C60.0 min
Demolding time960.0 min
Physical & Thermal
Density (23°C)1.1 g/cm³
Temperature Resistance (Continuous)-55 to 200 °C
Peak Temperature (Short-term)200 °C
Storage
Shelf life in original packaging12 months
Storage Temperature-10 to 30 °C

Documents and data sheets

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