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SILISIL RTV MF-Dura 32

SILISIL RTV MF-Dura 32

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SILISIL RTV MF-Dura 32 — 2K addition silicone Shore A 32 for detailed mold making and pad printing molds, available from Swiss stock.

2K Additive Silicone Shore A 32 (Brown-red, mixing ratio 1:1) — 2K additive silicone Shore A 32 for detailed mold making and pad printing molds.

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  • brand
  • Mixing ratio
  • Networking type
  • Paint has hardened
  • Self-leveling
  • Density (g/cm³)
  • Viscosity uncrosslinked (mPa·s)
  • Electrical insulation
  • Potting time (min)
  • Demolding time (min)
  • Full networking (h)
  • Food contact
  • Suitable for medical use
  • Certificates
  • Shore hardness A (cured)
  • Tensile strength (MPa)
  • Elongation at break (%)
  • Tensile strength (N/mm)
  • Container
  • Mixing ratio
  • Temperature range (°C)

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Mold making SILISIL silicone RTV-2 Swiss bearing additive platinum prototyping Swiss brand 2K mold making Shore A 32

 
General Terms and Conditions.

Shipping usually within 1 to 3 business days
(availability will be confirmed after ordering)

. Express logistics. Fast and reliable within Switzerland & Europe.

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

HS code: 3910.0000

HS code: 3910.0000

SILISIL RTV MF-Dura 32
SILISIL RTV MF-Dura 32
SILISIL ·

SILISIL RTV MF-Dura 32 is a room temperature vulcanizing 2-component addition silicone (platinum crosslinking, RTV-2) from the MF-Mold & Form series — 2K addition silicone Shore A 32 for detailed mold making and pad printing molds.

The mixture is prepared in a 1:1 ratio by weight (tolerance ±5%). Pot life at 23°C is approximately 10 minutes, demolding after approximately 90 minutes, and complete curing after 24 hours. Temperature resistant from -40°C to +200°C.

Key feature

Suitable for food contact in chocolate molds up to 70 °C — Addition system 1:1 by weight, addition cross-linking, low shrinkage and temperature resistant −40 to +200 °C.

SILISIL RTV MF-Dura 32 in figures
A 32
Shore hardness
6'000
mPa·s viscosity
10 min
Pot life @23 °C
370 %
Elongation at break

What distinguishes SILISIL RTV MF-Dura 32

Vulcanization at room temperature
Curing at room temperature — no oven, no UV lamp, no special equipment required.
High tensile strength
High tear resistance — robust against mechanical stress during demolding.
No shrinkage
Shrinkage during addition crosslinking — shape is immediately dimensionally stable without waiting time.
High dimensional accuracy and precision
High dimensional accuracy — the shape retains its form even after prolonged storage.
Tested for chocolate applications up to 70 °C
Suitable for food use after appropriate certification testing — ideal for chocolate and confectionery up to 70 °C.
Good processing viscosity
Practical viscosity — flows well, but remains controllable in multi-layer applications.

What is SILISIL RTV MF-Dura 32 used for?

Chocolate and confectionery molds
Suitable for food contact up to 70 °C — precise molds for chocolates, pralines and tablets for manufacturers and professional patisseries.
Pad printing pads
Silicone tampons with excellent color transfer and dimensional stability — transfer the color from the printing plate to plastic, glass and metal parts in industrial marking.
Detailed small-series molds
Reproduction of intricate models with lettering, microstructures and sharp edges — jewelry, toy prototypes, decorative components.
Concrete and stone replicas
Highly compatible with cement formulations — paving stones, facade elements, decorative architectural parts in small series.
Undercuts and negative forms
Elongation at break of 370% and tensile strength of 10 N/mm allow for the demolding of complex geometries without damage.
Industrial Master Models
Low-shrinkage reproduction of master models for vacuum casting, resin casting and manual small-batch production.

processing

1
Prepare the original
The surface to be reproduced must be clean, dry, and dust-free. The ideal processing temperature is 23°C — cooler environments significantly extend the pot life and curing time.
2
homogenize and mix components
Stir the base and catalyst thoroughly before use. Weigh out 1:1 by weight (tolerance ±5%). When mixing, thoroughly incorporate the mixture into the container walls and bottom.
3
Vacuum venting
For non-porous molds, briefly de-aerate the mixture under vacuum — trapped air bubbles are removed and a smooth mold surface is guaranteed.
4
Pour slowly into the mold
Pour in a thin stream from a height of approximately 30 cm into the lowest point — the silicone displaces air on its own and reaches all undercuts.
5
Vulcanizing and demolding
At 23 °C, demolding is possible after approximately 90 minutes; complete curing takes 24 hours. A 24-hour "maturation phase" is required before the first casting to ensure maximum strength.
Data sheets & safety data sheet
Full TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

Important instructions

Avoid crosslinking inhibitors
Additive systems like MF-Dura 32 are sensitive to sulfur, amine, tin, and phosphorus compounds—especially latex gloves, modeling clay, adhesive tapes, and some paints. If in doubt, make a small test cast before use.
Storage and shelf life
In its unopened original container, the product has a shelf life of at least 12 months when stored in a dry, cool place (10–25 °C). Consult the Safety Data Sheet (SDS) before opening.
Available packaging
1 kg + 1 kg, 5 kg + 5 kg, 25 kg + 25 kg, 200 kg + 200 kg. Other container sizes available on request.
compatibility
Compatible with polyurethane, epoxy, and polyester casting resins. Apply a release agent to protect the mold when using aggressive resins.

Recommended accessories

SILISIL Vaseline release paste white
Universal release agent for polyester, epoxy and polyurethane casts — protects the silicone mold from aggressive resins and extends the mold's lifespan.
View product →
SILISIL Delayer PA
Retarder for addition silicones — extends pot life and setting time for more complex multi-part structures and relaxed processing.
View product →
SILISIL Silicone Remover
Cleaning agent for silicone residues on tools, models and work surfaces — gentle and effective.
View product →

Which MF silicone for which application?

SILISIL RTV MF-Dura 32 in direct comparison with related MF products in our range (MF = Mold & Form).

MF-Dura 32
Current product 		MF-Dura 30 →MF-Dura 35 →MF-Dura 40 →
Shore hardness A32?3340
Mixed viscosity6'000?7'5005'500
Colorreddish-brown?TranslucentBlue
Pot life @23 °C10?2050
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
Mold making SILISIL silicone RTV-2 Swiss bearing additive platinum prototyping Swiss brand 2K mold making Shore A 32

Technical data for SILISIL RTV MF-Dura 32

All 21 product information 6 Physical properties 4 Electrical properties 1 Curing values ​​3 Product approvals 3 Mechanical properties 4
Product information
brand SILISIL
Mixing ratio 1:1
Networking type Addition (Platinum)
Container 500g+500g, 1kg+1kg, 5kg+5kg, 10kg+10kg, 25kg+25kg
Mixing ratio 1:1
Temperature range (°C) -40°C to 200°C
Physical properties
Paint has hardened reddish-brown
Self-leveling Yes
Density (g/cm³) 1.17
Viscosity uncrosslinked (mPa·s) 6000
Electrical properties
Electrical insulation Yes
Curing values
Potting time (min) 10
Demolding time (min) 90
Full networking (h) 24
Product approvals
Food contact Yes
Suitable for medical use No
Certificates RoHS, REACH
Mechanical properties
Shore hardness A (cured) A 32
Tensile strength (MPa) 4.5
Elongation at break (%) 370
Tensile strength (N/mm) 10

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) 3
SILISIL RTV MF-Dura 32 - Technical Data Sheet DE.pdf
125 KB
SILISIL RTV MF-Dura 32 - Technical Data Sheet EN.pdf
125 KB
SILISIL RTV MF-Dura 32 - Fiche Technique FR.pdf
125 KB
Safety Data Sheets (SDS) 3
SILISIL RTV MF-Dura 32 - Safety Data Sheet DE.pdf
316 KB
SILISIL RTV MF-Dura 32 - Safety Data Sheet EN.pdf
336 KB
SILISIL RTV MF-Dura 32 - Fiche de Sécurité FR.pdf
342 KB

Frequently asked questions about SILISIL RTV MF-Dura 32

Practical application and design questions — answered by SILITECH.

SILISIL RTV MF-Dura 32 is a two-component (Shore A 32, brownish-red) additive silicone for chocolate and confectionery molds and related applications. It is a two-component Shore A 32 additive silicone for detailed mold making and pad printing

At 23 °C, the pot life is approximately 10 minutes and the demolding time approximately 90 minutes. Complete curing is achieved after 24 hours. Lower temperatures extend, higher temperatures shorten these times.

As an addition system, SILISIL RTV MF-Dura 32 is sensitive to crosslinking inhibitors: sulfur, amine, tin, and phosphorus compounds can locally halt vulcanization. Avoid latex gloves, sulfur-containing modeling clays, some adhesive tapes, and PVC plasticizers in the immediate vicinity of the mold. If in doubt, make a small test cast.

SILISIL RTV MF-Dura 32 is mixed in a 1:1 ratio by weight (base to catalyst), with a maximum tolerance of ±5%. Homogenize both components separately before mixing, then thoroughly incorporate them – including the container walls and bottom. Brief vacuum degassing of the mixture is recommended for pore-free molds.

SILISIL RTV MF-Dura 32 achieves a Shore A hardness of 32 (ASTM D 2240), a tensile strength of >4.5 N/mm² (ASTM D 412), an elongation at break of approximately 370% and a tensile strength of 10 N/mm (ASTM D 624).

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Product specifications

Product information
Container 500g + 500g or 1kg + 1kg or 5kg + 5kg or 10kg + 10kg or 25kg + 25kg
brand SILISIL
Mixing ratio 1:1
Networking type Addition (Platinum)
Mixing ratio 1:1
Temperature range (°C) -40°C to 200°C
Physical properties
Paint has hardened reddish-brown
Self-leveling Yes
Density (g/cm³) 1.17
Viscosity uncrosslinked (mPa·s) 6000
Electrical properties
Electrical insulation Yes
Curing values
Potting time (min) 10
Demolding time (min) 90
Full networking (h) 24
Product approvals
Certificates RoHS or REACH
Food contact Yes
Suitable for medical use No
Mechanical properties
Shore hardness A (cured) A 32
Tensile strength (MPa) 4.5
Elongation at break (%) 370
Tensile strength (N/mm) 10
Keywords
Keywords
Mold making SILISIL silicone RTV-2 Swiss bearing additive platinum prototyping Swiss brand 2K mold making Shore A 32

Documents and datasheets

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