Addition curing silicone rubber

What are Addition Hardening Cast Rubbers? Addition-curing casting rubbers are a special class of silicone rubber that, after curing, deliver a beautiful, rubber-like, and flexible result. Here are some key features: Curing: These silicones cure through a reaction with a platinum catalyst. This process ensures a stable and durable structure....

  • Wacker Siliconen Additie Transparant 15 Normaal Wacker Siliconen Additie Transparant 15 Normaal

    WackerSilicone Addition Transparent 15 Normal

    In stock

    €24,50€20,25

    A high quality 2-component casting silicone. A fairly soft silicone with good tensile strength. Food-safe and skin-friendly.  These silicones are often used in prototyping because the original is visible in the silicone mold. This makes it possible to cut the...

  • Siliconesandmore Siliconen Additie Kleurloos 5 (zeer zacht) Siliconesandmore Siliconen Additie Kleurloos 5 (zeer zacht)

    SiliconesandmoreSilicone Addition Colorless 5 (very soft)

    In stock

    €28,95€23,93

    The Silicones A Colorless 5 is a 2-component (Platinum) addition curing silicone which cures at room temperature.  Because of the low shrinkage and very low hardness combined with good strength these silicones are suitable for mask making and for molds...

  • Wacker Siliconen Additie Transparant 40 Normaal Wacker Siliconen Additie Transparant 40 Normaal

    WackerSilicone Addition Transparent 40 Normal

    In stock

    €24,50€20,25

    The Silicone Additon Transparant Normal 40 is a 2-component (poly-addition) casting silicone which cures at room temperature to a strong rubber that is relatively hard. The silicones can also be used for food related materials, skin contact projects and even...

  • siliconesandmore Siliconen Culinair® siliconesandmore Siliconen Culinair®

    Silicone Culinary®

    In stock

    €38,95€32,19

    Siliconen Culinair® is the ideal mould material for your culinary creations. The Siliconen Culinair is a 2-component (poly-addition) pourable silicone, which cures at room temperature. These Silicones are very fluid and the results provide a high tensile strength. The Siliconen...

  • Wacker Siliconen Additie Transparant 15 Snel Wacker Siliconen Additie Transparant 15 Snel

    WackerSilicone Addition Transparent 15 Fast

    In stock

    €24,50€20,25

    The Silicone Addition Transparent 15 Fast is a 2-component (poly-addition) pourable silicone which, very rappidly, cures at room temperature to a quite soft but strong rubber silicone. This is a Skin safe and food grade silicone! These silicones are often...

  • siliconesandmore Siliconen Additie Pink 10 siliconesandmore Siliconen Additie Pink 10

    Silicone Addition Pink 10

    In stock

    €36,25€29,96

    Silicone A Pink 10 is a (platinum) addition curing 2-component casting silicone that vulcanises at room temperature. The silicone is quite fluid and characterized by a good tensile strength. The product is resistant to temperatures from -40°C to +280°C and is suitable...

  • Siliconesandmore Siliconen Additie Kleurloos 50 (hard) Siliconesandmore Siliconen Additie Kleurloos 50 (hard)

    SiliconesandmoreSilicone Addition Colorless 50 (hard)

    In stock

    €28,95€23,93

    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...

  • Wacker Siliconen Additie Transparant 40 Snel Wacker Siliconen Additie Transparant 40 Snel

    WackerSilicone Addition Transparent 40 Fast

    In stock

    €24,50€20,25

    The Silicone Addition Transparent are a very versatile 2-component (Platinum) Poly-addition pourable silicone which cures at room temperature. These silicones are quite liquid and the results provide a very high tensile strength. This is a skin safe and food grade...

  • siliconesandmore Siliconen Additie Yellow 25 Set siliconesandmore Siliconen Additie Yellow 25 Set

    Silicone Addition Yellow 25 Set

    In stock

    €31,50€26,03

    This medium hard silicone can be used as a casting material. Suitable for fragile and detailed master models. Yellow Shore (A) 25 (medium hard) Quite liquid (self-deaerating) Relative / good resistance with respect to acid / aggressive substances Easy to...

  • siliconesandmore Siliconen Additie Thixo A siliconesandmore Siliconen Additie Thixo A

    Silicone Addition Thixo A

    In stock

    €6,85€5,66

    Silicone Addition Thixo A is a thickener for all addition-/ platinum curing silicones. Thixo allows you to thicken the otherwise fluid silicone. Silicone Thixo A (addition-curing) is a viscous component that can be added to the pourable addition curing /...

  • siliconesandmore Siliconen Additie Green 30 Set siliconesandmore Siliconen Additie Green 30 Set

    Silicone Addition Green 30 Set

    In stock

    €31,50€26,03

    These relatively hard green silicones are ideal for casting silicone molds that need to be robust so that they don't collapse too quickly. Silicone A Green 30 is an (platinum) addition curing 2-component casting silicone that vulcanises at room temperature....

  • Wacker Siliconen Elastosil M 4601 A/B Wacker Siliconen Elastosil M 4601 A/B

    WackerSilicone Elastosil M 4601 A/B

    In stock

    €39,95€33,02

    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...

  • siliconesandmore Silicone Soft Flex 00-35 siliconesandmore Silicone Soft Flex 00-35

    Silicone Soft Flex 00-35

    In stock

    €39,95€33,02

    A colorless, very soft and stretchable silicone ideally suited for masks, robotics and similar projects. Colorless Low shrinkage <0,1%. Good fluidity Self deaerating Usable on skin Very soft Extremely stretchable Fast Description Silicone soft flex 00-35 is a 2-component (Platinum)...

  • siliconesandmore Siliconen Additie Helder 25 siliconesandmore Siliconen Additie Helder 25

    Silicone Addition Clear 25

    In stock

    €52,44€43,34

    Crystal clear silicone which are suitable for flexible infusion of LEDs and optical elements. These silicones are also very suitable for simulation of water in aquarium sets and windows for miniatures.  The Silicones A Crystal clear 25 is a 2-component...

  • Sale -17% -17% Wacker Elastosil FX 10 Wacker Elastosil FX 10

    WackerElastosil FX 10

    In stock

    €39,95€33,02 -17% -17%
    €33,00€27,27

    ELASTOSIL® FX platinum-cure silicone rubbers are used to create realistic skin effects in film, television and theater. Use the range of base rubbers, gels and additives to reach astonishing results for: FX make-up / lifecasting, Masks, Body parts /prosthetic effects,...

  • Wacker Elastosil FX 20 Wacker Elastosil FX 20

    WackerElastosil FX 20

    In stock

    €33,95€28,06

    ELASTOSIL® FX platinum-cure silicone rubbers are used to create realistic skin effects in film, television and theater. Use the range of base rubbers, gels and additives to reach astonishing results for: FX make-up / lifecasting, Masks, Body parts /prosthetic effects,...

  • siliconesandmore Siliconen Additie Helder 0 Superzacht Set siliconesandmore Siliconen Additie Helder 0 Superzacht Set

    Silicone Addition Clear 0 Supersoft Set

    In stock

    €53,75€44,42

    The Silicones Clear 0 Supersoft Set is a two component Poly-addition-silicone which cures at room temperature. After mixture, the Silicones have good liquid qualities and are crystal clear. In time the hardened silicones will become a little yellowish, but will...

  • siliconesandmore Siliconen Additie Gel 840 Helder siliconesandmore Siliconen Additie Gel 840 Helder

    Silicone Addition Gel 840 Water Clear

    In stock

    €26,95€22,27

    Light art by Hypar Collective, https://www.hyparcollective.nl/ The silicone gel 840 is a 2-component (Platinum) Poly-addition silicone which cures at room temperature into a gel. These silicones exhibit, after mixing, good fluidity and turn crystal clear. This silicone gel will, over...

  • S.A.M. SAM Deadener 1000 S.A.M. SAM Deadener 1000

    S.A.M.SAM Deadener 1000

    In stock

    €7,50€6,20

    This silicone deadener makes your platinum curing silicone softer, more flexible, more stretchable and above all less like elastic and more like skin tissue. This deadener actively contributes to the polymer network and thus will not migrate to the surface....

  • siliconesandmore Plastique Culinair®  Snel

    Plastique Culinair® Fast

    In stock

    €47,04€38,88

    Plastique Culinair® Fast is a quick setting kneadable silicone that is foodsave and skinsave. The Silicone Plastique Culinair® Fast is a 2-component (poly-addition) silicone which cures at room temperature. Silicones are very easy to process by kneading them by hand. The silicones...

  • Silconic Stensil ECO 70 Blue

    SilconicStensil ECO 70 Blue

    In stock

    €21,00€17,36

    The Stensil ECO 70 malleable silicone, is a 2 component (Poly-Addition) silicone that cures at room temperature. The silicones are very easy to mix and process by hand. The silicones are ready for use after just 5 minutes. Easy to...

  • Wacker Elastosil RT 620

    WackerElastosil RT 620

    In stock

    €49,95€41,28

    Pourable, addition-curing, two-component silicone rubber that vulcanizes at room temperature.Main application: Making printing pads, food contact (FDA/ BfR compliant). Food safe BfR compliant FDA compliant Fast curing Low viscosity Low Shore A hardness (ca. 17) High tear resistance ELASTOSIL-RT-620-AB-en-2022.06.28.pdf

  • Wacker Elastosil M 4644

    WackerElastosil M 4644

    In stock

    €47,50€39,26

    Elastosil M 4644 is a transparent 2-component silicone with excellent resistance to casting resins. With the Elastosil M 4644 you can make molds with a long lifespan. Particularly suitable for casting resins such as epoxy and polyurethane. This variant sweats...

  • Siliconesandmore Silicone Wound Siliconesandmore Silicone Wound

    SiliconesandmoreSilicone Wound

    In stock

    €24,95€20,62

    Very soft silicone Easy to apply Easy to shape Description  With this Silicone Wound Silicones you can easily create realistic looking wounds and other special effects on the skin. These silicones are soft and follow the movement of the skin. ...

  • Zhermack Siliconen Additie SkinForm

    ZhermackSilicone Addition SkinForm

    In stock

    €54,00€44,63

    SkinForm (Zhermack ZA 22 Thixo Body Silicone) is a 2 component room temperature addition curing thixotropic silicone. Extremely suitable for body casting. The silicone is safe to use on the skin. These medium hard silicones have high dimensional stability and...

  • siliconesandmore Siliconen Additie Helder 5 (zeer zacht)

    Silicone Addition Clear 5 (very soft)

    In stock

    €66,50€54,96

    Crystal clear silicones that are suitable for flexible casting of LEDs and optical elements, but also for modeling for simulating water or windows. The Silicones Addition Crystal clear 5 is a 2-component (Platinum) addition curing silicone which cures at room...

  • Siliconesandmore Siliconen Additie Kleurloos 25 (gemiddelde hardheid)

    SiliconesandmoreSilicone Addition Colorless 25 (average hardness)

    In stock

    €28,95€23,93

    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...

  • Last stock! Silconic Stensil ECO 30 Zandkleurig

    SilconicStensil ECO 30 Sand

    In stock

    €21,00€17,36

    The Stensil ECO 30 malleable silicone, is a 2 component (Poly-Addition) malleable silicone that cures at room temperature. The silicones are very easy to mix and process by hand. The silicones are ready for use after just 5 minutes. Easy...

  • Siliconesandmore Siliconen Glas Effect

    SiliconesandmoreSilicone Glass Effect

    In stock

    €21,00€17,36

    Low shrinkage of <0.1% Very fluid and self deaerating Crystal clear Suitable for potting Refr. Index @ 25°C 1.406 Description The Silicone glass effect is a 2-component (Platinum) addition curing silicone which cures at room temperature. The silicones are, after...

  • Silconic Stensil ECO 50 L Roze

    SilconicStensil ECO 50 L Pink

    In stock

    €21,00€17,36

    The Stensil ECO 50 L malleable silicone, is a 2 component (Poly-Addition) malleable silicone that cures at room temperature. The silicones are very easy to mix and process by hand. The silicones are ready for use after just 5 minutes....

  • Last stock! Wacker Elastosil M 4630

    WackerElastosil M 4630

    In stock

    €182,65€150,95

    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...

  • Wacker Elastosil M 4370  A/B

    WackerElastosil M 4370 A/B

    In stock

    €48,95€40,45

    Pourable, addition-curing, two-component silicone rubber that vulcanizes at room temperature. Main application: Silicone surface for printing rollers, making molds for casting low-melting metal alloys. Food contact (FDA/ BfR compliant). Very good flowability and self-deaeration Fast and non-shrink cure at room...

  • Wacker Elastosil RT 623 Wacker Elastosil RT 623

    WackerElastosil RT 623

    In stock

    €43,57€36,01

    Pourable, addition hardening, 2 component silicone rubber for pad printingwhich vulcanizes at room temperature. Main application: Making print pads. very good flow high reactivity for fast demolding even if large amounts of silicone fluid are added fast and non-shrink cure at...

  • Momentive Performance Materials LSR Topcoat HE Momentive Performance Materials LSR Topcoat HE

    Momentive Performance MaterialsLSR Topcoat HE

    In stock

    €32,50€26,86

    This silicone coating is applied to cured silicone to mattify and reduce friction. LSR Top Coat HE is a two-component translucent matt coating with high elongation for spraying technology. It has been developed as an abrasion resistant coating for printed...

  • Silconic Stensil ECO 20 Orange

    SilconicStensil ECO 20 Orange

    In stock

    €21,00€17,36

    The Stensil ECO 20 malleable silicone, is a 2 component (Poly-Addition) silicone that cures at room temperature. The silicones are very easy to mix and process by hand. The silicones are ready for use after just 5 minutes. Easy to...

  • Silconic Stensil ECO 95 Blue

    SilconicStensil ECO 95 Blue

    In stock

    €21,00€17,36

    The Stensil ECO 95 malleable silicone, is a 2 component (Poly-Addition) malleable silicone that cures at room temperature. The silicones are very easy to mix and process by hand. The silicones are ready for use after just 5 minutes. Easy...

  • Silconic Stensil ECO 60 Orange

    SilconicStensil ECO 60 Orange

    In stock

    €21,00€17,36

    The Stensil ECO 60 malleable silicone, is a 2 component (Poly-Addition) silicone that cures at room temperature. The silicones are very easy to mix and process by hand. The silicones are ready for use after just 5 minutes. Easy to...

  • Last stock! Wacker Elastosil FX - Slow Wacker Elastosil FX - Slow

    WackerElastosil FX - Slow

    In stock

    €165,00€136,36

    Please note, FX Slow is now called PT 88. Slow down the standard curing time of the Wacker Elastosil FX silicone by adding the FX Slow. First weigh and mix the required amount of silicone as described. Then add the...

  • Wacker Elastosil M 4670

    WackerElastosil M 4670

    In stock

    €57,00€47,11

    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...

  • Wacker Elastosil FX Thixo Wacker Elastosil FX Thixo

    WackerElastosil FX Thixo

    Not in stock, please contact us.

    €25,95€21,45

    The Wacker FX Thixo is a thickener especially for the Wacker FX silicone. This makes the silicone thicker to pasty. Recommended dosing:0% = best fluidity0.2% = medium fluidity0.5% = no fluidity Shelf life ELASTOSIL® FX products are best stored between...

  • Silconic Stensil ECO 50 Turquoise

    SilconicStensil ECO 50 Turquoise

    Not in stock, please contact us.

    €21,00€17,36

    The Stensil ECO 50 malleable silicone, is a 2 component (Poly-Addition) silicone that cures at room temperature. The silicones are very easy to mix and process by hand. The silicones are ready for use after just 5 minutes. Easy to...

  • Last stock! Wacker Elastosil FX - Softener Wacker Elastosil FX - Softener

    WackerElastosil FX - Softener

    In stock

    €19,50€16,12

    Adjust Your Preferred Hardness by Adding ELASTOSIL® FX Softener.By adding ELASTOSIL® FX Softener, you can bring down the hardness of your ELASTOSIL® FX base rubber to achieve more “flesh-like” textures. The softer you go, the greater the tack will be,...

  • Wacker Cenusil M 825

    WackerCenusil M 825

    In stock

    €377,00€311,57

    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...

  • Last stock! Siliconesandmore Siliconen schuim Gesloten Cel 2

    SiliconesandmoreSilicone foam Closed Cell 2

    In stock

    €67,17€55,51

    The Silicone Foam Closed Cell 2 is a 2-component (Platinum) Poly-Addition casting silicone that cures at room temperature and foams up to 2 times the volume. This silicone can of course also be colored with silicone dye.This silicone is used...

  • Last stock! Wacker Elastosil RT 601

    WackerElastosil RT 601

    In stock

    €125,78€103,95

    Pourable, addition-cured, two-component silicone rubber that vulcanizes at room temperature. Main application:- Automotive electronics- Measuring and controlling, Sensor technology- Optical measuring installations Application details- all-round potting compound- manufacture of cast articles Characteristics - two-part, 9:1 mixing ratio- low viscosity: 3,500...

  • Wacker Elastosil M 4642

    WackerElastosil M 4642

    In stock

    €58,29€48,17

    The Wacker Elastosil M 4642 is a two-component casting silicone. This silicone cures at room temperature. These silicones have an outstanding resistance to common casting resins! These silicones are used a lot, especially in prototyping. Special features- very good flow- fast...

  • Siliconesandmore Siliconen schuim Gesloten Cel 3

    SiliconesandmoreSilicone foam Closed Cell 3

    In stock

    €31,71€26,21

    The Silicone Foam Closed Cell 3 is a 2-component (Platinum) Poly-Addition casting silicone that cures at room temperature and foams up to 3 times the volume. This silicone can of course also be colored with silicone dye.This silicone is used...

  • Siliconesandmore Siliconen schuim Gesloten Cel 5

    SiliconesandmoreSilicone foam Closed Cell 5

    In stock

    €34,00€28,10

    The Silicone Foam Closed Cell 5 is a 2-component (Platinum) Poly-Addition casting silicone that cures at room temperature and foams up to 5 times its volume. This silicone can of course also be colored with silicone dye.This silicone is used...


What are Addition Hardening Cast Rubbers?


Addition-curing casting rubbers are a special class of silicone rubber that, after curing, deliver a beautiful, rubber-like, and flexible result. Here are some key features:

  1. Curing: These silicones cure through a reaction with a platinum catalyst. This process ensures a stable and durable structure.

  2. Flexibility: Addition-curing casting rubbers are highly flexible and can be easily deformed without losing their integrity.

  3. Durability: They remain durable for many years and do not shrink after curing.

Applications of Addition-Curing Casting Rubbers:

  • Skin-Friendly: This type of silicone is often suitable for skin contact and does not shrink. Special versions can even be used as molds for food items like chocolate or cake.

  • Creative Uses:

    • Create fun shapes for edible treats using chocolate.
    • Craft silicone masks like a pro.
    • Make your own seals or silicone liners.
    • Create molds for miniatures or sculptures and more using this versatile platinum silicone!
  • Color Options: Clear and colorless variants can be beautifully tinted. Even white silicones can achieve a nice color effect.

  • Extra Fun Factor: You can also fill these silicones with glow powder, hollow glass beads, glitter, or magnetic powder for even more fun applications!

Do you have any further questions about addition-curing casting rubbers? We’re happy to assist! And don’t forget to consult our instructions to discover numerous ways to use silicone molds.

 

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