WetCast Molds - Silicone and Polyurethane for Precast Concrete
WetCast Molds - Silicone and Polyurethane for Precast Concrete Discover our specialized collection of WetCast molds made from high-quality silicone and flexible polyurethane. Specially developed for the precast concrete industry where high compression strength, dimensional stability under weight, and industrial reliability are essential. Original Concrete Applications from Our Practice Proven...
This silicone has a good fluidity and gives great detail while still remaining strong.The silicone Condensation 20 A + B is a 2-component (poly-condensation curing) castable molding silicone which cures at room temperature. Silicone C 20 -A + B are...
Low shrinkage of <0.1%. Very liquid so self-deaerating Transparent Shore A 50 stable but flexible Suitable for stable but flexible moulds Siliconen Addition Colorless 50 are ideal to make stable flexible moulds. Description The Silicone Addition Colorless 50 is a...
The silicone condensation DC 3481 with + hardener DC 3081 R is a condensation-crosslinking 2-component casting silicone that hardens at room temperature. The silicone has good fluidity, is suitable for the finest details and is characterized by a very high...
PLEASE NOTE: since August 2023, polyurethane with a diisocyanate content of more than 0.1% may only be used in companies where employees have completed the required courses. Companies can register for online training via THIS link. You can also read more information here....
Silicone Elastosil Wacker M 4601 has a good resistance to casting resins (in particular, polyurethane) and low shrinkage. Very suitable for making strong, flexible and non greasy molds. These silicones are ideal for prototyping. Elastosil M 4601 is a two...
Silicone Condensation Starter kit 20 is based on our 2-component (poly-condensation) casting silicone suited for soap, candle and concrete moulds etc. These Silicones are ideal for making soap Moulds, Candle Moulds, Concrete moulds etc. This Starter kit includes:P 1 kg...
Good liquid (self-deairing) Easy to mix After curing strongly Low shrinkage (<0.3%) Colour White Non-Bleeding Relatively Fast Description The silicone Condensation DC 3481 with the catalyst 3081 F is a professional 2-component (poly-condensation curing) castable molding silicone which cures at room...
PLEASE NOTE: since August 2023, polyurethane with a diisocyanate content of more than 0.1% may only be used in companies where employees have completed the required courses. Companies can register for online training via THIS link. You can also read...
PLEASE NOTE: since August 2023, polyurethane with a diisocyanate content of more than 0.1% may only be used in companies where employees have completed the required courses. Companies can register for online training via THIS link. You can also read...
Low shrinkage of <0.1%. Very liquid so self-deaerating Transparent Shore A 50 stable but flexible Suitable for stable but flexible moulds Siliconen Addition Colorless 25 are ideal to make stable flexible moulds. Description The Silicone Addition Colorless 25 is a...
Pourable, addition-curing, two-component silicone rubber that vulcanizes at room temperature.Main application: making molds for concrete castin., food contact (FDA/ BfR compliant). outstanding resistance to concrete very good flow fast and non-shrink cure at room temperature which can be accelerated considerably...
This hardener works on all condensation silicones. For standard use, the condensation B 5% catalyst is recommended. Processing The silicone Condensation 20, you can easily mix by hand or machine. Mix the A and B component carefully and in the...
These silicones have good fluidity, provide a lot of detail and have a high tensile strength and are soft. The silicone Condensation 35 is a 2-component cast silicone that hardens at room temperature. Excellent for casting molds for detailed and...
Pourable, 2-component silicone, with a Shore A 55 (hard) end result. Very suitable for molds for casting resins such as polyurethane and epoxy.Main application: Making shrink-free molds with excellent reproduction accuracy. This product is intended for the business market. For...
Pourable, addition-curing RTV-2 silicone rubber, especially suitable for all molds of models with extensive undercuts. Excellent flowability and self-deaeration High tear strength Low hardness (Shore A 28) Mixing ratio of 1:1 for straightforward processing Fast and non-shrink cure at room...
This silicone has a good fluidity and gives great detail while still remaining strong.The silicone Condensation 20 A + B is a 2-component (poly-condensation curing) castable molding silicone which cures at room temperature. Silicone C 20 -A + B are...
Condensation-curing, castable, 2-component silicone rubber. Main application: Making cost effective molds, especially for casting various casting resins. very good flowability and self-deaeration low Shore A hardness (approx. 25) excellent tear strength high elongation and flexibility outstanding chemical resistance to attack...
PLEASE NOTE: Since August 2023, polyurethane with a diisocyanate content of more than 0.1% may only be used in companies where employees have completed the required training courses. Companies can register for an online training via THIS link. You can...
Condensation-curing, castable, 2-component silicone rubber. Main application: Making cost effective molds, especially for casting various casting resins. very good flowability and self-deaeration low Shore A hardness (approx. 25) excellent tear strength high elongation and flexibility outstanding chemical resistance to attack...
good flow ability and self-deaeration proper tear strength universal hardness (26 Shore A) easy to meter and mix due to 1 : 1 ratio perfect and non-shrink cure at room temperature which can be accelerated considerably by the application of...
Silicone Addition QM 272 – High-Performance Mold Making Silicone Key Features Relatively high hardness for silicone rubber Low shrinkage <0.1% for dimensionally stable molds Excellent flowability and self-degassing during processing Suitable for rigid yet flexible molds Outstanding resistance to epoxy and...
WetCast Molds - Silicone and Polyurethane for Precast Concrete
Discover our specialized collection of WetCast molds made from high-quality silicone and flexible polyurethane. Specially developed for the precast concrete industry where high compression strength, dimensional stability under weight, and industrial reliability are essential.
Original Concrete Applications from Our Practice
Proven WetCast Applications:
Concrete sewer pipes and casings – dimensionally stable under high weight during the casting process
Precast concrete slabs for construction - precise dimensions and smooth finish
Industrial concrete molds for infrastructure – long-term dimensional stability under heavy loads
Precast concrete beams and girders - high compression strength during production
Concrete steps and landing steps - perfect detail of anti-slip textures
Prefabricated wall panels and partition walls - large surfaces without deformation
Concrete piles and foundation elements – dimensional stability during long casting cycles
Silicone WetCast Molds - Premium Quality
Advantages of our silicone for WetCast:
High compression value - retains its shape under heavy concrete weight
Perfect detail reproduction - copies finest textures and reliefs
Self-releasing - usually no release agent required
Temperature resistant (-60°C to +200°C)
Chemical resistance to alkaline concrete mixtures (pH 12-13)
Minimal shrinkage for accurate prefabricated dimensions
Long lifespan with complex shapes
Flexible Polyurethane WetCast Molds - Wear-Resistant and Economical
Our flexible polyurethane systems (A20, A40, A60, A75):
Superior wear resistance - ideal for mass production WetCast
High compression strength - retains shape under industrial loads
Cost-effective – €8-20/kg versus €20-40/kg for silicone
Faster curing – shorter production cycles possible
Repairable - repairs possible with intensive use
Various Shore hardnesses - A20 to A75 for specific applications
Chemical resistance to oils, plasticizers and pigments
When to Use Which WetCast Material?
Choose silicone WetCast molds for:
Architectural prefabricated elements with fine details
Complex shapes and textures (stair steps, reliefs)
Color-sensitive WetCast applications
High temperatures during casting process
Maximum detail required
Choose polyurethane WetCast molds for:
Mass production of sewer pipes and concrete slabs
Industrial prefabricated building with high wear resistance
Budget-sensitive WetCast productions
Large series with raw concrete mixtures
Fast production cycles required
This document provides a brief overview of the advantages and disadvantages of silicone and polyurethane for WetCast.
This overview from Wacker gives a more technical difference between silicone and polyurethane molds for WetCast.
Technical WetCast Specifications
Silicone WetCast features:
Shore A hardness: 15-40 (depending on application)
Tensile strength: 6-9 N/mm²
Elongation at break: 400-600%
Temperature resistance: -60°C to +200°C
Polyurethane WetCast properties:
Shore A hardness: 20-75 (various systems available)
Higher wear resistance than silicone
Faster curing: 8-24 hours
Temperature resistance: 0°C to +80°C
Additional WetCast Applications
Based on our experience also suitable for:
Facade panels with complex reliefs
Decorative concrete beams and columns
Elegant concrete tiles with fine details
Architectural ornaments and sculptures
Paving stones for mass production
For WetCast professionals and precast specialists , our silicone and polyurethane molds offer the industrial reliability essential for high-quality WetCast concrete production. Available in various Shore hardnesses and curing times for optimal results.
All information is based on industrial WetCast experience and offers no guarantees. The customer is responsible for testing suitability for specific precast applications.
