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SILISIL RTV MF-Ultra 60

SILISIL RTV MF-Ultra 60

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SILISIL RTV MF-Ultra 60 — 2K industrial silicone Shore A 60, blue — very high hardness for highly stressed tool molds, available from Swiss stock.

2K addition silicone Shore A 60 (blue, mixing ratio 10:1) — very high hardness for highly stressed tool 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)
  • Food contact
  • Suitable for medical use
  • Certificates
  • Shore hardness A (cured)
  • Elongation at break (%)
  • Container

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Mold making SILISIL silicone RTV-2 Swiss bearing addition Platinum Shore A 60 Prototyping Swiss brand 2K Moulding / Mold making

 
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-Ultra 60
SILISIL RTV MF-Ultra 60
SILISIL ·

SILISIL RTV MF-Ultra 60 is a room temperature vulcanizing 2-component addition silicone (platinum crosslinking, RTV-2) of the MF-Mold & Form series — 2K industrial silicone Shore A 60, blue — very high hardness for highly stressed tool molds.

The mixture is prepared in a 10:1 ratio by weight (tolerance ±5%). Pot life at 23°C is approximately 60 minutes, demolding is possible after approximately 24 hours, and complete curing is achieved after 24 hours. Temperature resistant from -40°C to +200°C.

Key feature

Very high hardness (Shore A 60) with a high-viscosity 10:1 system — a robust choice for highly stressed tool shapes with long tool life. Even higher final hardness: MF-Ultra 70 (Shore A 67).

SILISIL RTV MF-Ultra 60 in figures
A 60
Shore hardness
230'000
mPa·s viscosity
60 min
Pot life @23 °C
200 %
Elongation at break

What makes SILISIL RTV MF-Ultra 60 stand out

Very high final hardness Shore A 60
Very high final hardness — dimensionally stable for highly stressed industrial tool molds.
Mixing ratio 10:1 (higher precision)
Higher mixing precision — minimizes mixing errors and ensures consistent final properties.
Tear resistance 10 N/mm
Solid tear resistance — sufficient for medium production runs with standard materials.
Very long mold life
Long service life — economical for medium-sized production runs with hundreds of castings per mold.
Cooking time 60 minutes
Very short processing time — suitable for high-throughput production with short mold cycles.
Temperature resistant from -40 to +200 °C
Expanded range of applications for hot wax applications and mold storage in extreme climates.

What is SILISIL RTV MF-Ultra 60 used for?

High-strength tool molds
Shore A 60 with a high-viscosity 10:1 system for tool molds requiring high dimensional accuracy and long tool life. For maximum hardness: MF-Ultra 70 (Shore A 67).
High-stress resin and polyester casts
Hundreds of castings with aggressive resins — the high final hardness protects against distortion and wear.
Injection molding preforms for toolmaking
Master model reproduction in final tool hardness — transferability of the geometry to subsequent steel or aluminum machining.
High-precision jewelry wax molds
The 10:1 system minimizes mixing errors — an economical choice for goldsmiths with high throughput and premium quality requirements.
Industrial concrete and stone tools
Maximum hardness protects against abrasive wear in mass-produced imitations of concrete, stone, and granite.
Special applications with the highest load
Tear resistance 10 N/mm and tensile strength >5 N/mm² at Shore A 60 — for exceptional industrial applications.

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 10:1 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 24 hours, with complete curing after 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-Ultra 60 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
5 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-Ultra 60 in direct comparison with related MF products in our range (MF = Mold & Form).

MF-Ultra 60
Current product 		MF-Ultra 50 →MF-Ultra 70 →MF-Dura 40 →
Shore hardness A60506740
Mixed viscosity230'0005'000230'0005'500
ColorBlueOrangeBlueBlue
Pot life @23 °C60156050
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
Mold making SILISIL silicone RTV-2 Swiss bearing addition Platinum Shore A 60 Prototyping Swiss brand 2K Moulding / Mold making

Technical data for SILISIL RTV MF-Ultra 60

All 16 product information 4 Physical properties 4 Electrical properties 1 Curing values ​​2 Product approvals 3 Mechanical properties 2
Product information
brand SILISIL
Mixing ratio 10:1
Networking type Addition (Platinum)
Container 500g + 5kg, 2.5kg + 25kg, 20kg + 200kg
Physical properties
Paint has hardened Blue
Self-leveling Yes
Density (g/cm³) 1.24
Viscosity uncrosslinked (mPa·s) 230'000
Electrical properties
Electrical insulation Yes
Curing values
Potting time (min) 60
Demolding time (min) 24
Product approvals
Food contact No
Suitable for medical use No
Certificates RoHS, REACH
Mechanical properties
Shore hardness A (cured) A 60
Elongation at break (%) 200

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-Ultra 60 - Technical Data Sheet DE.pdf
125 KB
SILISIL RTV MF-Ultra 60 - Technical Data Sheet EN.pdf
124 KB
SILISIL RTV MF-Ultra 60 - Fiche Technique FR.pdf
124 KB

Frequently asked questions about SILISIL RTV MF-Ultra 60

Practical application and design questions — answered by SILITECH.

SILISIL RTV MF-Ultra 60 is a two-component (Shore A 60, blue) addition silicone for high-strength tool molds and related applications. Two-component industrial silicone, Shore A 60, blue — very high hardness for highly stressed tool molds

At 23 °C, the pot life is approximately 60 minutes and the demolding time approximately 24 hours. Complete curing is achieved after 24 hours. Lower temperatures extend, higher temperatures shorten these times.

As an addition system, SILISIL RTV MF-Ultra 60 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-Ultra 60 is mixed in a 10:1 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 non-porous molds.

SILISIL RTV MF-Ultra 60 achieves a Shore A hardness of 60 (ASTM D 2240), a tensile strength of >5.0 N/mm² (ASTM D 412), an elongation at break of approximately 200% and a tensile strength of 10 N/mm (ASTM D 624).

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Product specifications

Product information
Container 500g + 5kg or 2.5kg + 25kg or 20kg + 200kg
brand SILISIL
Mixing ratio 10:1
Networking type Addition (Platinum)
Physical properties
Paint has hardened Blue
Self-leveling Yes
Density (g/cm³) 1.24
Viscosity uncrosslinked (mPa·s) 230'000
Electrical properties
Electrical insulation Yes
Curing values
Potting time (min) 60
Demolding time (min) 24
Product approvals
Certificates RoHS or REACH
Food contact No
Suitable for medical use No
Mechanical properties
Shore hardness A (cured) A 60
Elongation at break (%) 200
Keywords
Keywords
Mold making SILISIL silicone RTV-2 Swiss bearing addition Platinum Shore A 60 Prototyping Swiss brand 2K Moulding / Mold making

Documents and datasheets

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