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SILISIL RTV MF-SprayThixo 25-10

SILISIL RTV MF-SprayThixo 25-10

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Thixotropic 2K addition silicone of the MF series — mixing ratio 1:1.

Thixotropic 2K addition silicone of the MF series — Shore A 25, 10 min pot life, non-sagging on vertical surfaces, 1:1 mixing ratio, ideal for wall molding and multi-layer constructions

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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

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Mold making SILISIL Silicone RTV-2 Swiss Bearing Addition Platinum Prototyping Shore A 25 Swiss Brand 2K Moulding / Mold making Sprayable Thixotropic

 
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-SprayThixo 25-10
SILISIL RTV MF-SprayThixo 25-10
SILISIL ·

SILISIL RTV MF-SprayThixo 25-10 is a room temperature vulcanizing 2-component addition silicone (platinum crosslinking, RTV-2) of the MF-Mold & Form series — Thixotropic 2K spray silicone Shore A 25 — stable on vertical surfaces.

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 60 minutes, and complete curing after 24 hours. Temperature resistant from -40°C to +200°C.

Key feature

Thixotropic and non-sagging — can be applied to vertical surfaces, ceilings, and sculptures without running. Ideal for on-site molding and restoration.

SILISIL RTV MF-SprayThixo 25-10 in figures
A 25
Shore hardness
Thixotropic
consistency
10 min
Pot life @23 °C
400 %
Elongation at break

What distinguishes SILISIL RTV MF-SprayThixo 25-10

Thixotropic consistency — stable
Remains in place on vertical surfaces without running off — On-site molding on walls, ceilings, sculptures is possible.
Potting time 10 minutes
Very short processing time — suitable for high-throughput production with short mold cycles.
Tear resistance 20 N/mm
Very high tear resistance — the mold withstands hundreds of cycles with abrasive materials without wear.
Elongation at break 400%
High elasticity — safe demolding of complex geometries without damage to the mold or the original.
Brushable or sprayable
Can be applied with a brush OR syringe — flexible application for different geometries and quantities.
Mixing ratio 1:1 by weight
Simple 1:1 ratio — mixable by hand without precision scales, ideal for workshops and hobbyists.

What is SILISIL RTV MF-SprayThixo 25-10 used for?

Vertical and overhead impressions
Thixotropic consistency remains on walls and ceilings — reliefs, statue profiles, component replicas on the installed object.
Restoration and monument preservation
On-site molding of columns, facade reliefs and historical building components that cannot be removed.
Brush or spray application on sculptures
Brush on the first layer of detail, then spray on the supporting layer — a classic sculpting technique on a studio scale.
Component shapes without container
Stands independently — no box or support structure required, saving material and time for small and individual shapes.
Multi-layer coatings for thick molds
Tensile strength 20 N/mm at elongation at break 400 % — robust multi-layer forms for industry and crafts.
Mock-up and set-building replicas
Film sets, theatre stage designs and advertising mock-ups benefit from the mobile application without tools or form boxes.

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 60 minutes; complete curing takes 24 hours. Allow a 24-hour "maturation phase" before the first casting for 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-SprayThixo 25-10 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. Other package 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-SprayThixo 25-10 in direct comparison with related MF products in our range (MF = Mold & Form).

MF-SprayThixo 25-10
Current product 		MF-Spray 25-6 →MF-PuttyFast 38 →MF-Dura 30 →
Shore hardness A252538?
Mixed viscositythixotropic8'000(Play-Doh)?
ColorLight blueLight blueLight purple?
Pot life @23 °C1063?
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 Prototyping Shore A 25 Swiss Brand 2K Moulding / Mold making Sprayable Thixotropic

Technical data for SILISIL RTV MF-SprayThixo 25-10

All 19 product information 4 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 400g, 1kg + 1kg, 5kg + 5kg, 10kg + 10kg, 25kg + 25kg
Physical properties
Paint has hardened Light blue
Self-leveling Thixotropic
Density (g/cm³) 1.1
Viscosity uncrosslinked (mPa·s) -
Electrical properties
Electrical insulation Yes
Curing values
Potting time (min) 9
Demolding time (min) 60
Full networking (h) 24
Product approvals
Food contact No
Suitable for medical use No
Certificates RoHS, REACH
Mechanical properties
Shore hardness A (cured) A 25
Tensile strength (MPa) 4
Elongation at break (%) 400
Tensile strength (N/mm) 20

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) 4
SILISIL RTV MF-SprayThixo 25-10 - Technical Data Sheet DE.pdf
151 KB
SILISIL RTV MF-SprayThixo 25-10 - Technical Data Sheet DE.pdf
124 KB
SILISIL RTV MF-SprayThixo 25-10 - Technical Data Sheet EN.pdf
156 KB
SILISIL RTV MF-SprayThixo 25-10 - Technical Data Sheet FR.pdf
156 KB

Frequently asked questions about SILISIL RTV MF-SprayThixo 25-10

Practical application and design questions — answered by SILITECH.

SILISIL RTV MF-SprayThixo 25-10 is a two-component (Shore A 25, light blue) addition silicone sealant for vertical and overhead impressions and related applications. Thixotropic two-component spray silicone Shore A 25 — non-sagging on vertical surfaces

At 23 °C, the pot life is approximately 10 minutes and the demolding time approximately 60 minutes. Complete curing is achieved after 24 hours. Lower temperatures extend, higher temperatures shorten these times.

As an addition system, SILISIL RTV MF-SprayThixo 25-10 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-SprayThixo 25-10 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 non-porous molds.

SILISIL RTV MF-SprayThixo 25-10 achieves a Shore A hardness of 25 (ASTM D 2240), a tensile strength of >4.0 N/mm² (ASTM D 412), an elongation at break of approximately 400% and a tensile strength of 20 N/mm (ASTM D 624).

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Product specifications

Product information
Container 400g or 1kg + 1kg or 5kg + 5kg or 10kg + 10kg or 25kg + 25kg
brand SILISIL
Mixing ratio 1:1
Networking type Addition (Platinum)
Physical properties
Paint has hardened Light blue
Self-leveling Thixotropic
Density (g/cm³) 1.1
Viscosity uncrosslinked (mPa·s) -
Electrical properties
Electrical insulation Yes
Curing values
Potting time (min) 9
Demolding time (min) 60
Full networking (h) 24
Product approvals
Certificates RoHS or REACH
Food contact No
Suitable for medical use No
Mechanical properties
Shore hardness A (cured) A 25
Tensile strength (MPa) 4
Elongation at break (%) 400
Tensile strength (N/mm) 20
Keywords
Keywords
Mold making SILISIL Silicone RTV-2 Swiss Bearing Addition Platinum Prototyping Shore A 25 Swiss Brand 2K Moulding / Mold making Sprayable Thixotropic

Documents and datasheets

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