Silicones for polyester casting resin

High-quality silicone for polyester casting resin Discover our extensive collection of professional silicones specially developed for use with polyester casting resin. These silicones do not bond with polyester, making them perfect for mold making. Advantages of our silicone: No adhesion with polyester casting resin - easy release High temperature resistance...
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  • Dow Corning Dow Silastic RTV 3481 R – Condensatie Silicone voor Hars- & Betonmallen Dow Corning Dow Silastic RTV 3481 R – Condensatie Silicone voor Hars- & Betonmallen

    Dow CorningDow Silastic RTV 3481 R – Condensation Silicone for Resin & Concrete Molds

    In stock

    €33,50€27,69

    ✔ Flexible, Strong, High PU and polyester resin resistance
    ✔ Beige, Good Fluid, Non-Bleeding
    ✔ Shore (A) 18 ~ 21
    ✔ Low shrinkage (0.2 ~ 0.4%)
    ✔90 ~ 120 minutes working time
    ✔ Mixing ratio (Weight) 100: 5

  • Polytek PlatSil FS-10 – Fast-Setting Platina-Cure Silicone voor Mold Making & Rapid Prototyping

    PolytekPlatSil FS-10 – Fast-Setting Platinum-Cure Silicone for Mold Making & Rapid Prototyping

    Beperkte voorraad – nieuwe levering onderweg

    €55,23€45,64

    PlatSil FS-10 is a fast-curing 1A:1B platinum-cured silicone with a Shore hardness of OO60/A13. With a pour time of 8 minutes and a demold time of just 25 minutes. Ideal for mold making with fast turnaround times.

  • Polytek PlatSil FS-20 – Snelle Platina-Cure Silicone voor Mold Making en Prototypes

    PolytekPlatSil FS-20 – Fast Platinum-Cure Silicone for Mold Making & Prototyping

    Beperkte voorraad – nieuwe levering onderweg

    €55,23€45,64

    PlatSil FS-20 is a fast-curing 1A:1B platinum-cured silicone with a Shore hardness of OO66/A20. With an 8-minute pot life and a demold time of just 25 minutes. Ideal for mold making with fast turnaround times.

  • Huismerk - SAM Siliconen Additie Green 30 Set Huismerk - SAM Siliconen Additie Green 30 Set

    Huismerk - SAMSilicone Addition Green 30 Set

    In stock

    €31,50€26,03

    ✔ Flexible, Strong
    ✔ Green
    ✔ Shore (A) 30 (Hard)
    ✔ Low shrinkage (<0.1%)
    ✔ 60 minutes working time
    ✔ Mixing ratio (Weight) 100: 100

  • Huismerk - SAM Siliconen Additie Yellow 25 Set Huismerk - SAM Siliconen Additie Yellow 25 Set

    Huismerk - SAMSilicone Addition Yellow 25 Set

    In stock

    €32,95€27,23

    ✔ Flexible, Strong
    ✔ Yellow
    ✔ Shore (A) 25 (Moderately Hard)
    ✔ Low shrinkage (<0.1%)
    ✔ 60 minutes working time
    ✔ Mixing ratio (Weight) 100: 100

  • Last stock! Wacker Wacker Elastosil M  4440

    WackerElastosil M 4440

    5 Arbeitstage

    €232,00€191,74

    ✔ Very good resistance to casting resins
    ✔ Very good flowability and self-deaeration
    ✔ Medium Shore A hardness (approx. 37)

  • Wacker Wacker Elastosil M 4514 Set

    WackerWacker Elastosil M 4514 Set

    Not in stock, please contact us.

    €163,05€134,75

    ✔ Very good flowability and self-deaeration
    ✔ Low Shore A hardness (approx. 25)
    ✔ Excellent tear strength
    ✔ High elongation and flexibility
    ✔ Outstanding chemical resistance to attack by polyester and polyurethane resins, mold life is significantly extended

  • Wacker Wacker Elastosil M 4514, alleen A component

    WackerElastosil M 4514, only A component

    In stock

    €142,94€118,13

    ✔ Very good flowability and self-deaeration
    ✔ Low Shore A hardness (approx. 25)
    ✔ Excellent tear strength
    ✔ High elongation and flexibility
    ✔ Outstanding chemical resistance to attack by polyester and polyurethane resins, mold life is significantly extended

  • Last stock! Wacker Wacker Elastosil M 4641

    WackerWacker Elastosil M 4641

    In stock

    €634,95€524,75

    ✔ High-quality silicone from Wacker
    ✔ Fast and non-shrink curing at room temperature
    ✔Shore A 43
    ✔ Transparent
    ✔High tear strength
    ✔ Food safe (FDA)
    ✔ Excellent resistance to casting resins
    ✔ Very suitable for clear casting resins

  • Wacker Wacker Elastosil M 4642

    WackerWacker Elastosil M 4642

    In stock

    €58,50€48,35

    ✔ very good flow
    ✔ fast and non-shrink cure
    ✔ medium Shore A hardness (A 37)
    ✔ high tear strength
    ✔ long-term stability
    ✔ outstanding resistance to common casting resins

  • Wacker Wacker Elastosil M 4670

    WackerWacker Elastosil M 4670

    In stock

    €57,00€47,11

    ✔ High-quality silicone from Wacker
    ✔ 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 resins

  • Wacker Wacker Elastosil Vario 15 Normaal – Translucente Platinum Silicone voor Mallen & Prototyping Wacker Wacker Elastosil Vario 15 Normaal – Translucente Platinum Silicone voor Mallen & Prototyping

    WackerWacker Elastosil Vario 15 Normal – Translucent Platinum Silicone for Molds & Prototyping

    In stock

    €27,95€23,10

    ✔ Flexible, Strong
    ✔ Transparent
    ✔ Shore A 15 (Adjustable)
    ✔ Low shrinkage (<0.1%)
    ✔ 60 minutes working time (Adjustable)
    ✔ Mixing ratio (Weight) 100: 10

  • Wacker Wacker Elastosil Vario 15 Snel – Snelle Translucente Platinum Silicone voor Prototyping & Mallen Wacker Wacker Elastosil Vario 15 Snel – Snelle Translucente Platinum Silicone voor Prototyping & Mallen

    WackerWacker Elastosil Vario 15 Fast – Fast Translucent Platinum Silicone for Prototyping & Molds

    In stock

    €27,95€23,10

    ✔ Flexible, Very fast, Strong
    ✔ Transparent
    ✔ Shore (A) 15 (Adjustable)
    ✔ Low shrinkage (<0.1%)
    ✔ 2 minutes working time (Adjustable)
    ✔ Mixing ratio (Weight) 100: 10

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

    WackerSilicone Elastosil M 4601 A/B

    In stock

    €39,95€33,02

    ✔ Flexible, Strong, Red-Brown
    ✔ Good resistance to Resins
    ✔ Shore (A) 28 (Medium Hard)
    ✔ Low shrinkage (<0.1%)
    ✔ 90 minutes working time
    ✔ Mixing ratio (Weight) 90:10
    ✔ Suitable for tin casting
    ✔ Food safe

  • Last stock! Wacker Wacker Vario 40 - Siliconen Additie Transparant Normaal Wacker Wacker Vario 40 - Siliconen Additie Transparant Normaal

    WackerSilicone Addition Transparent 40 Normal

    In stock

    €24,50€20,25

    ✔ Flexible, Strong
    ✔ Transparent
    ✔ Shore A 40 (Adjustable)
    ✔ Low shrinkage (<0.1%)
    ✔ 60 minutes working time (Adjustable)
    ✔ Mixing ratio (Weight) 100: 10

  • Wacker Wacker Vario 40 - Siliconen Additie Transparant Snel Wacker Wacker Vario 40 - Siliconen Additie Transparant Snel

    WackerSilicone Addition Transparent 40 Fast

    In stock

    €24,50€20,25

    ✔ Flexible, Very fast, Strong
    ✔ Transparent
    ✔ Shore (A) 40 (Adjustable)
    ✔ Low shrinkage (<0.1%)
    ✔ 2 minutes working time (Adjustable)
    ✔ Mixing ratio (Weight) 100: 10

  • Wacker Wacker Vario Catalyst B – Verharder voor Elastosil Vario 15 & 40 Transparant Silicone

    WackerVario Catalyst B-component for Transparent 15/40 (Normal or Fast)

    In stock

    €5,00€4,13

    ✔ Flexible, Very fast, Strong
    ✔ Transparent
    ✔ Shore (A) 40 (Adjustable)
    ✔ Low shrinkage (&lt; 0.1%)
    ✔ 2 minutes working time (Adjustable)
    ✔ Mixing ratio (Weight) 100:10

High-quality silicone for polyester casting resin

Discover our extensive collection of professional silicones specially developed for use with polyester casting resin. These silicones do not bond with polyester, making them perfect for mold making.

Advantages of our silicone:

  • No adhesion with polyester casting resin - easy release
  • High temperature resistance for optimal results
  • Reasonable lifespan of the molds
  • Easy to use for beginners and professionals
  • Fairly chemically resistant to polyester resins
  • Flexible material for complex shapes

Perfect for creating decorative objects, industrial parts, prototypes, and artistic creations. Its non-stick properties make our silicone ideal for repeated use when casting with polyester resin.

Like epoxy, polyester remains very aggressive towards silicone, so the number of casts that can be made in a mold is limited and depends on the type of polyester, its volume, and the time it remains in the mold.

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