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Molds for Concrete

Molds for Concrete

long lasting rubbers for concrete casting and stamping.

PU Rubber

Products to cast concrete

  • Mold Star™ Series

    Mold Star™ silicones cure to soft, strong rubbers which are tear resistant and exhibit very low long term shrinkage.

  • Rebound ™ Series

    easy-to-use platinum-cure silicone rubbers which self-thicken for making brush-on molds of almost any model.

Release Agents

Release Agents for Concrete


Sealers for Concrete

  • SuperSeal™ /500 ml

    SuperSeal™ /500 ml

    21,96 EUR

  • SuperSeal™ Kit

    SuperSeal™ Kit

    12,43 EUR

  • SuperSeal™ /3,7 lt

    SuperSeal™ /3,7 lt

    61,90 EUR

  • Sonite Wax /0,8 kg

    universal release agent wax

    22,53 EUR

  • Sonite Wax /3 kg

    Sonite Wax universal release agent wax /3 kg

    86,96 EUR

  • Sonite Wax /15,88 kg

    Sonite Wax universal release agent wax /15,88 kg

    288,60 EUR

  • One Step™

    360 gr

    24,45 EUR

  • One Step™

    18 kg

    351,08 EUR


What is the best release agent for releasing concrete from a rubber mold?

A: It depends on 1) the type of mold rubber you are using as your mold material and 2) the make up of your concrete ad mixture.

1. What mold rubber are you using?

Silicone rubber has the best release properties, but will succumb to the abrasive effects of the high-aggregate content of the concrete and lose detail over time. It’s best to use a release agent like Smooth-On’s AquaCon® water-based concrete release agent to protect the mold.

Urethane rubber does not have great release properties to begin with, so a release agent is recommended from the start. Note; Our customers find that, even without a release agent, high aggregate castings will release from VytaFlex molds after the mold is "seasoned" - used to cast concrete 10 - 12 times with AquaCon® Release Agent.

2. Ad mixtures:

High sand content ad mixtures generally release easily and do not require mold release from either silicone or urethane molds.

High aggregate ad mixtures will not release easily and will even bond to a urethane mold.

AquaCon® Concrete Mold release offers the following advantages; a) it will release concrete castings from the mold, b) it will not harm the mold, c) it will not stain your concrete castings and d) will not interfere with concrete pigment.

Do Not Use: Concrete casters try different release concoctions such as vegetable oil or petroleum jelly, but these materials will destroy the rubber mold over time and may stain your concrete.

What If I Don’t Have AquaCon® Concrete Release Agent? Until you can get some AquaCon®, you can try dishwashing soap and water mixed at 10 parts water to 1 part soap. Rinse the mold with soap solution and immediately cast your concrete.


Let us help you find your way.

The list below may help you find what you are looking for via an alternative path.


  • Flexible Molds

    used for casting hard materials like concrete, gypsum, resins etc.

  • Hard Molds

    used for casting flexible materials like foams and silicones, also used to support flexible molds.

  • Ceramic Molds

    reproduce plaster molds for the ceramics industrie.

  • Vacuum Forming Molds

    Extra hard plastics to make vacuum form models.

  • Molds for Candle Making

    excellent for making molds that are strong, durable and dimensionally stable

  • Molds for Concrete

    long lasting rubbers fit for concrete casting and stamping.

  • Molds for Food

    Special food grade silicones and plastics. FDA approved.

  • Support Shells

    for mother molds and function wellas support shell.

  • Body Molding

    lifecasting aplications: alginate's, silicones and plaster bandages.

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