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  2. Silicone products
  3. RTV-2 Silicones
  4. BLUESIL RTV 3428 A + B Kit pink
  5. RTV-2 Silicones
Price list: Website 0 CHF Price list
Price list: Website 0 CHF Price list
BLUESIL RTV 3428 A + B Kit pink

BluesilRTV-2 silicones

BLUESIL RTV 3428 A + B Kit pink

BLUESIL RTV 3428 A + B is an addition-curing, two-component silicone elastomer (mixing ratio 100:10) that cures at room temperature; heat accelerates the curing process. It is used for the production of flexible molds with excellent detail reproduction, mechanical resistance, and service life, as well as for expansion cores for composite components in the aerospace and marine industries, and for molds for chocolate, sugar, marzipan, and confectionery. The cured composition complies with the positive lists in France (Brochure 1227), Germany (BGA XV-A), and the USA (FDA CFR-21). Key properties: pot life approx. 1 h, demolding after approx. 16 h at 23 °C, Shore A approx. 28, elongation at break approx. 600%, tear propagation strength approx. 20 kN/m, linear shrinkage approx. 0.1%. The B component is available in pink, white, and transparent. Use undiluted in food molds.

Temperature range
-55 to 200 °C
Hardness
28 Shore A
Viscosity A
25’000 mPa·s
Pot life
60 min

CHF 0.00 / pc.
  • Brand
  • Color hardened - Pink
  • Food contact
  • Shore hardness A (cured)
  • Manufacturer
  • Self-leveling
  • Medical grade
  • Mixing Ratio
  • Pot life (min)
  • Demolding time (min)
  • Curing type
  • Electrical Insulation
  • Number of components
  • Consistency
  • UV resistance
  • Mixing Ratio
  • Container
Your selection BLUESIL RTV 3428 A + B Kit pink
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HS Code: 39100000

BLUESIL RTV 3428 A + B Kit pink sample offer

Technical Data

Typical values, not a specification. The technical data sheet (TDS) is binding.

Mechanical properties

Shore hardness A
28 Shore A
Tensile Strength
7.5 MPa
Elongation at break
600 %
Tear resistance
20 kN/m
Linear shrinkage
< 0.1 %

Processing

Viscosity Component A
25’000 mPa·s
Viscosity Component B
8’000 mPa·s
Pot life at 23 °C
60 min
Demolding time
960 min

Physical and thermal

Density (23 °C)
1.1 g/cm³
Temperature resistance (duration)
-55 to 200 °C
Peak temperature (briefly)
200 °C

Storage

Shelf life in original packaging
12 months
Storage Temperature
-10 to 30 °C

Product Information

Brand
Bluesil
Manufacturer
Elkem Silicones
Mixing Ratio
1:1
Curing type
Addition (Platinum)
Number of components
2K (two-component)
Consistency
Flowable
Mixing Ratio
10:1
Container
1.1 kg, 11 kg, 22 kg

Further Properties

UV resistance
No

Physical Properties

Cured Color
Pink
Self-leveling
Yes

Electrical Properties

Electrical Insulation
Yes

Curing values

Pot life (min)
30
Demolding time (min)
240

Product Approvals

Food contact
No
Medical grade
No

Mechanical properties

Shore hardness A (cured)
A 28
Keywords
  • Mold Making
  • Silicone
  • BLUESIL
  • 2K Silicone
  • ELKEM
  • Swiss warehouse
  • Aviation
  • RTV
  • Addition
  • Platinum
  • Complete kit
  • ready-to-mix
  • Prototyping
  • RTV 3428
  • Shore A 28
  • hohe Dehnung
  • high tear strength
  • Composite-Form
  • Bootsbau
  • Thermal Expansion Former
  • flexible mold
  • rosa

Product Description

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.

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.