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Silicone-Rubber

Silicone mold rubbers enable the precise reproduction of complex geometries. Thanks to their permanently elastic properties and dimensional stability during curing, they are ideally suited for mold making, model casting, art replicas, or technical applications with casting resins. Whether medium-viscosity, bubble-free processing, or with variable pot life – silicone-based compounds offer flexible use and deliver professional results. These systems are characterized by high tear strength and long-lasting shape stability.
 

Silicone mold rubber – High-precision molds for demanding applications

Silicone rubber | HP-SI6GB
  • Medium viscous mould making
  • High tear strength
  • Working time 6-8 minutes
  • High fillable casting resin
from 20,90 EUR
incl. 19% tax excl. Shipping costs
Silicone rubber | HP-SI30GB
  • Medium viscous mould making
  • High tear strength
  • Working time 30 minutes
  • Smooth cast without air bubble
from 20,90 EUR
incl. 19% tax excl. Shipping costs
Thixotropic for silicone SI30GB | SI-VD
  • Excellent thickening effect for SI30GB
  • Solvent-free
  • Dilution of condensation and additioncuring RTV-2 silicone systems
  • Optimization of the gradient properties
from 14,90 EUR
incl. 19% tax excl. Shipping costs
Thinner for SI6GB / SI30GB / SI41GB | SI-RV
  • Excellent dilution effect
  • Solvent-free
  • Dilution of condensation and additioncuring RTV-2 silicone systems
  • Optimization of the gradient properties
  • Dosage till 10 %
  • Quantity: 500 g
19,94 EUR
39,88 EUR per Kg
incl. 19% tax excl. Shipping costs
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What is silicone mold rubber and where is it used?

Silicone mold rubbers are used to produce flexible casting molds. They are widely used in mold and model making, prototyping, plastic processing, and for creating fine art replicas. This category usually includes two-component silicone systems that cure to a permanently elastic state and release cleanly from the master model. Their high tear resistance and accurate detail reproduction make them suitable for complex mold shapes and repeated use. Thanks to their compatibility with casting resins, they have become essential in industrial applications. When combined with the right additives, their material properties can be further enhanced.
 

What makes silicone mold rubbers so versatile?

Key features include good flow properties, bubble-free curing, and long-term dimensional stability. Depending on the system, they allow for short pot lives or extended processing windows – ideal for precise moldings using epoxy resins, polyurethanes, or other castable materials. Their temperature-resistant formulation ensures shape retention even under thermal or mechanical stress. Viscosity can be adjusted using thinner or thixotropic agents, enabling the production of both fine-detail molds and large-scale parts. The aging-resistant material structure supports reliable reusability. Even in higher volumes, consistent reproduction quality is maintained.
 

Why are silicone molds particularly suitable for casting resins?

With their non-stick surface and high elongation at break, silicone molds allow for clean demolding. They resist chemical stress from epoxy resins, polyester resins, or PU systems, ensuring long service life. Their dimensional accuracy during curing makes them the first choice for industrial use with high repeat precision. Those looking to buy silicone mold rubber will find tested systems in the range that are specifically optimized for use with casting resins, additives, and reinforcements – perfect for use in workshops, small series production, or special applications in mold making. The high processing quality and cost efficiency make silicone molds a proven solution for professional users.