Skip to content
Send inquiry
0

Silicones

Mold making, potting, lubrication and separation.

All silicones
Search for application
Mold MakingpottingRelease agentSilicone Oil
Also as a private label SILISIL

Adhesives & sealants

From structural bonding to screw locking.

All adhesives and sealants
Search for application
Cyanoacrylate adhesiveThreadlockingEpoxy 1K/2KUV-curing

Resins & potting

Giessen, optics, electronics.

All resins & potting compounds
Search for application
pottingcrystal clearthermally conductive
Also as a private label SILIRESIN

Lubricants

Fats, oils, dry lubricants.

All lubricants
Search for application
Release agentLubricating GreaseSilicone Oil

Technical Sprays

Maintenance, assembly, disconnection.

All technical sprays
Search for application
Release agentClean
Also as a private label SILISIL

Surface Treatment

Clean, pretreat, protect.

All surface treatments
Search for application
CleanPrimers & Adhesion Promoters

Construction chemicals

Sealing, bonding, flooring.

All construction chemicals
Search for application
Construction chemicals

Dosing & mixing technology

Pistols, static mixers, systems.

All dosing and mixing technology
Search for application
Dispensing gunStatic mixer
Also as a private label SILISIL
SILITECH's own brands
SILISILSilicones, silicone oils, spraysSILIRESINCasting and potting resins
All brands
Website 0 CHF
  1. All Products
  2. SILISIL RTV MF-Ultra 60
SILISIL RTV MF-Ultra 60

SILISIL RTV MF-Ultra 60

https://www.silitech.ch/web/image/product.template/3566/image_1920?unique=f645fcd

Pourable, addition-curing RTV-2 silicone rubber, blue; mixing ratio 10:1 by weight (base: catalyst, tolerance max. ±5%); for serial molds for epoxy, PU and polyester resins;
Shore A approx. 60; viscosity of mixture 230,000 mPa·s; pot life approx. 60 min

2K addition-curing silicone Shore A 60 (blue, mixing ratio 10:1) — very high hardness for highly stressed mold tools.

Price on request

  • Brand
  • Mixing Ratio
  • Curing type
  • Cured Color
  • Self-leveling
  • Density (g/cm³)
  • Uncrosslinked viscosity (mPa·s)
  • Electrical Insulation
  • Pot life (min)
  • Demolding time (min)
  • Food contact
  • Medical grade
  • Certificates
  • Shore hardness A (cured)
  • Elongation at break (%)
  • Container

This combination does not exist.

Contact us
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 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: 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-cure silicone (platinum-catalyzed, RTV-2) from 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 ratio of 10:1 by weight (tolerance ±5 %). Pot life at 23 °C approx. 60 minutes, demolding after approx. 24 hours, complete curing after 24 hours. Temperature resistant –40 °C to +200 °C.

Key property

Very high hardness (Shore A 60) with high-viscosity 10:1 system — robust choice for highly stressed tool molds with long service 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 sets SILISIL RTV MF-Ultra 60 apart

Very high final hardness Shore A 60
Very high final hardness — dimensionally stable for highly stressed industrial mold forms.
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 series with standard materials.
Very high mold service life
Long pot life — economical for medium series with hundreds of casts per mold.
Pot life 60 minutes
Very short processing time — suitable for high-throughput production with short mold cycles.
Temperature resistance −40 to +200 °C
Extended application range for hot wax applications and mold storage in extreme climates.

What is SILISIL RTV MF-Ultra 60 used for?

High-strength mold forms
Shore A 60 with a high-viscosity 10:1 system for tool molds with high dimensional accuracy and long service life. For maximum hardness: MF-Ultra 70 (Shore A 67).
High-stress resin and polyester casts
Hundreds of casts with aggressive resins — the high final hardness protects against distortion and wear.
Injection molding preforms for mold making
Master model reproduction in final tool hardness — transferability of geometry to subsequent steel or aluminum machining.
High-precision jewelry wax patterns
10:1 system minimizes mixing errors — economical choice for goldsmiths with high throughput and premium quality requirements.
Industrial concrete and stone tools
Maximum hardness protects against abrasive wear in mass production of concrete, artificial stone, and granite imitations.
Special applications with the highest load
Tear resistance 10 N/mm and tear 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 free of dust. The ideal processing temperature is 23 °C — cooler environments significantly extend pot life and curing time.
2
Homogenize and mix components
Stir base and catalyst thoroughly before use. Weigh out 10:1 by weight (tolerance ±5%). When mixing, thoroughly incorporate the sides and bottom of the container.
3
Vacuum degassing
For pore-free molds, briefly degas the mixture under vacuum — entrapped air bubbles are removed, ensuring a smooth mold surface.
4
Pour slowly into the mold
Pour from a height of approx. 30 cm in a thin stream into the deepest point — the silicone displaces air independently and reaches all undercuts.
5
Vulcanize and demold
At 23 °C, demolding is possible after approx. 24 hours, with complete curing after 24 hours. Before the first pour, allow a 24 h "maturation phase" for maximum strength.
Data Sheets & Safety Data Sheet
Complete TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

Important Notes

Avoid crosslinking inhibitors
Addition systems such as MF-Ultra 60 are sensitive to sulfur, amine, tin, and phosphorus compounds — especially latex gloves, kneading compounds, adhesive tapes, and some varnishes. If in doubt, make a small test cast before use.
Storage and Shelf Life
Shelf life of at least 12 months in unopened original container when stored in a dry, cool place (10–25 °C). Consult the Safety Data Sheet (SDS) before opening.
Available containers
5 kg. Other container sizes available on request.
Compatibility
Compatible with polyurethane, epoxy, and polyester casting resins. For aggressive resins, apply a release agent to protect the mold.

Recommended accessories

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

Which MF silicone for which application?

SILISIL RTV MF-Ultra 60 in direct comparison with related MF products from 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 Fields
Key terms related to this product. Also useful for our search and filters.
Mold Making SILISIL Silicone RTV-2 Swiss Stock Addition Platinum Shore A 60 Prototyping Swiss Brand 2K Molding / Mold Making Price List Missing

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
Curing type Addition (Platinum)
Container 500 g + 5 kg, 2.5 kg + 25 kg, 20 kg + 200 kg
Physical Properties
Cured Color Blue
Self-leveling Yes
Density (g/cm³) 1.24
Uncrosslinked viscosity (mPa·s) 230'000
Electrical Properties
Electrical Insulation Yes
Curing values
Pot life (min) 60
Demolding time (min) 24
Product Approvals
Food contact No
Medical grade No
Certificates RoHS, REACH
Mechanical properties
Shore hardness A (cured) A 60
Elongation at break (%) 200

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
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 2K addition-cure silicone (Shore A 60, blue) for high-strength mold making and related applications. 2K industrial silicone Shore A 60, blue — very high hardness for highly stressed molds

At 23 °C, the pot life is approx. 60 minutes and the demolding time approx. 24 hours. Full curing is achieved after 24 hours. Lower temperatures extend these values, higher temperatures shorten them.

As an addition-curing system, SILISIL RTV MF-Ultra 60 is sensitive to crosslinking inhibitors: sulfur, amine, tin, and phosphorus compounds can locally stop vulcanization. Avoid latex gloves, sulfur-containing modeling compounds, certain adhesive tapes, and PVC plasticizers in the immediate vicinity of the mold. When 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 tolerance of maximum ±5%. Homogenize both components separately before mixing, then incorporate thoroughly — including container walls and bottom. A brief vacuum degassing of the mixture is recommended for pore-free 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 approx. 200%, and a tear resistance of 10 N/mm (ASTM D 624).

Your question not covered?

Our technical team provides personal advice on material selection, processing questions, and individual requirements. Fast and competent.

Submit inquiry Request sample

Product Specifications

Product Information
Container 500 g + 5 kg or 2.5 kg + 25 kg or 20 kg + 200 kg
Brand SILISIL
Mixing Ratio 10:1
Curing type Addition (Platinum)
Physical Properties
Cured Color Blue
Self-leveling Yes
Density (g/cm³) 1.24
Uncrosslinked viscosity (mPa·s) 230'000
Electrical Properties
Electrical Insulation Yes
Curing values
Pot life (min) 60
Demolding time (min) 24
Product Approvals
Certificates RoHS or REACH
Food contact No
Medical grade 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 data sheets

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