Addition curing silicone rubber
Silicones that cure with platinum catalyst. Very dimensionally stable and durable.
After curing, these silicones give a beautiful, rubbery / flexible result. Addition silicones have a shelf life of many years, do not shrink and come in various variations
LSR Topcoat HE
€ 32,50 € 26,86 Excl. tax
✔ Very good adhesion to silicone substrates
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✔ High elongation
✔ High reactivity
✔ Neutral odour and taste (FDA)
✔ Excellent stability and flexibility at low temperatures
✔ Suitable for compliance with the food contact regulationsSAM Deadener 1000
€ 7,50 € 6,20 Excl. tax
✔ To soften platinum silicone
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✔ Cross-links in the silicone
✔ Very easy to use
✔ Powerful
✔ Not sweatingSilicone Addition Clear 5 (very soft)
€ 66,50 € 54,96 Excl. tax
✔ Flexible, Crystal clear
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✔ Suitable for potting
✔ Shore (A) 5 (Very Soft)
✔ Low shrinkage (<0.1%)
✔ 30 minutes working time
✔ Mixing ratio (Weight) 100: 100Silicone Wound
€ 24,95 € 20,62 Excl. tax
✔ Flexible, Very Soft, Skin Friendly
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✔ Light skin color
✔ Shore (A) 5 (soft)
✔ Low shrinkage (<0.1%)
✔ 2 minutes working time
✔ Mixing ratio (weight) 100: 100Stensil ECO 95 Blue
€ 21,- € 17,36 Excl. tax
✔ Kneadable silicone, Strong, Blue
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✔ Shore (A) 95 (Hard)
✔ Low shrinkage (< 0.1 %)
✔ 90 Seconds working time @ 20°C
✔ Mixing Ver. (Weight)100:100Stensil ECO 50 Yellow
€ 21,- € 17,36 Excl. tax
✔ Kneadable silicone, Strong, Yellow
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✔ Shore (A) 50
✔ Low shrinkage (< 0.1 %)
✔ 90 Seconds working time @ 20°C
✔ Mixing Ver. (Weight)100:100Plastique Culinair® Fast
€ 47,04 € 38,88 Excl. tax
✔ Kneading compound, Strong, Blue
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✔ FDA Approved
✔ Shore (A) 40 (Hard)
✔ Low shrinkage (<0.1%)
✔ 100 Seconds of working time
✔ Mixing ratio. (Weight) 100: 100WACKER SilGel® 612 A/B
€ 87,76 € 72,53 Excl. tax
✔ two-part, 1 : 1 mixing ratio
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✔ low viscosity
✔ rapid heat cure
✔ very low hardness (silicone gel)
✔ crystal clear
✔ pronounced inherent tack
✔ flame retardant, UL listed 94HBElastosil M 4642
€ 58,29 € 48,17 Excl. tax
✔ very good flow
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✔ fast and non-shrink cure
✔ medium Shore A hardness (A 37)
✔ high tear strength
✔ long-term stability
✔ outstanding resistance to common casting resinsSilicone Glass Effect
€ 38,- € 31,41 Excl. tax
The safe way to mimic broken glass.
CompareElastosil FX 20
€ 33,95 € 28,06 Excl. tax
✔ Safe to use on skin
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✔ Very good flow ability and self-deaeration
✔ Shore A 20
✔ Easy to meter and mix due to 1:1 ratio
✔ Short curing time at room temperature
✔ Translucent
✔ Easy to color with common colors for special effectZhermack SFX 00-20
€ 452,- € 373,55 Excl. tax
✔ Highly Flexible, Skin Safe
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✔ Color Translucent
✔ Shore (A) 00-20 (Very Very Soft)
✔ Low Shrinkage (< 0.1 %)
✔ Processing Time (@ 23 °C) 25 min.
✔ Curing time (@ 23 °C) 70 minutes
✔ Viscosity (cP) 5,200
✔ Mixing ratio:- Pay later with Klarna
- 30 Days return period!
- Advice from real Experts
Elastosil M 4670
€ 281,75 € 232,85 Excl. tax
✔ High-quality silicone from Wacker
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✔ Fast and non-shrink curing at room temperature
✔ Shore A 55
✔ Food safe (FDA / BfR compliant)
✔ High tear strength
✔ Stable mechanical properties
✔ Excellent resistance to casting resinsSilicone Addition Yellow 25 Set
€ 31,50 € 26,03 Excl. tax
✔ Flexible, Strong
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✔ Yellow
✔ Shore (A) 25 (Moderately Hard)
✔ Low shrinkage (<0.1%)
✔ 60 minutes working time
✔ Mixing ratio (Weight) 100: 100Elastosil FX 10
-6% Sale
€345,- € 325,- € 268,60 Excl. tax
✔ Safe to use on skin
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✔ Very good flow ability and self-deaeration
✔ Shore A 10
✔ Easy to meter and mix due to 1:1 ratio
✔ Short curing time at room temperature
✔ Translucent
✔ Easy to color with common colors for special effectSilicone foam Open Cell 7 - Spreadable
€ 272,92 € 225,55 Excl. tax
✔ Foam factor 7
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✔ Spreadable
✔ Hardness Shore C 5-10
✔ Flame retardant UL94-V0
✔ Open cell structure
✔ Mixing ratio (Weight) 100:100
✔ Working time 2 minutes
✔ Curing time 70 min @ 60°C
✔ Density 0.162 g/cm³Stensil ECO 20 Orange
€ 21,- € 17,36 Excl. tax
✔ Kneadable silicone, Strong, Sand
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✔ Shore (A) 20
✔ Low shrinkage (< 0.1 %)
✔ 90 Seconds working time @ 20°C
✔ Mixing Ver. (Weight)100:100Elastosil RT 623
€ 43,57 € 36,01 Excl. tax
✔ very good fluidity
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✔ high reactivity
✔ fast and shrink-free curing at room temperature
✔ average Shore A hardness (approx. 31)
✔ high tear strength
✔ long-term stability of the hardnessElastosil M 4370 A/B
€ 48,95 € 40,45 Excl. tax
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.
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€ 47,50 € 39,26 Excl. tax
✔ excellent resistance to casting resins, such as polyurethanes and epoxies
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✔ Moderately fluid
✔ fast and shrink-free curing at room temperature
✔ Slightly oil-bleeding
✔ Shore A hardness (approx. 40)
✔ good transparency of the curedCenusil M 825
€ 11.254,- € 9.300,83 Excl. tax
CENUSIL® M 825 A/B is especially suitable for all molds of models with extensive undercuts.
CompareStensil ECO 60 Orange
€ 21,- € 17,36 Excl. tax
✔ Kneadable silicone, Strong, Orange
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✔ Shore (A) 60
✔ Low shrinkage (< 0.1 %)
✔ 90 Seconds working time @ 20°C
✔ Mixing Ver. (Weight)100:100Elastosil FX 28
€ 33,95 € 28,06 Excl. tax
✔ Safe to use on skin
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✔ Very good flow ability and self-deaeration
✔ Shore A 28
✔ Easy to meter and mix due to 1:1 ratio
✔ Short curing time at room temperature
✔ Translucent
✔ Easy to color with common colors for special effectElastosil RT 601
€ 125,78 € 103,95 Excl. tax
✔ Potting automotive and optical parts
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✔ Addition hardening
✔ Liquid
✔ Crystal clear
✔ Two-component 9:1
✔ Shore (A) 45

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