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Silicone Moulding

Prototyping, Small Batch, and Low-Volume Production

Liquid silicon rubber (LSR) moulding is the preferred manufacturing method for creating millions of different rubber parts, gaskets, valves, and much more. Silicone rubber has many manufacturing advantages. Parts made using silicone have excellent resistance to the effects of temperature, electricity, and chemicals making them appropriate across a span of industries.

Silicone resists corrosion, temperature fluctuation, and electrical current placing the potential uses for LSR into the millions!

Industries Include:

  • Medical
  • Energy
  • Automotive
  • Electronics
  • Aerospace
  • Defense

Producing Silicone Casts

Silicone moulded parts can be created for prototypes, in small batches, and for low-volume production.  The following pieces of information will help you decide how you will want to produce your silicone parts:

  • Quantity How many will you need?
  • ToleranceWhat does it need to do?
  • Applications What will it need to withstand?

3D Printing of Silicone Parts

Many projects require multiple prototypes be made quickly.  If you need 1-20 simple silicone casts made in just 24-48 hours, call us and explore what 3D silicone printing by GS Proto can do for you.

Silicone Casting

Using non-metallic moulds, high-quality silicone castings can be produced using a range of colours.  For a dozen to a few hundred units, silicone casting offers a less-expensive option when compared to producing metal parts.

Silicone Moulding

When you need high-quality prototype parts made in small quantities, liquid silicone rubber (LSR) moulding is the fast and economical solution.  A single silicone mould can be reused, producing up to 50 identical casts quickly saving time and money – parts are easily reproduced without additional tooling or design.

The Liquid Silicone Moulding (LSR) Process

For small-batch and low-volume manufacturing of silicone casts, liquid silicone moulding is the fast and reliable manufacturing process.  Thousands of identical moulds can be reproduced quickly using a single design and only one mould for expedited delivery of your silicone rubber parts.  LSR is available in a wide variety of colours, has reduced weight compared to metallic parts, and is extremely resilient.


Every part – no matter the materials used –  begins with a design.  If you have a CAD file you can upload directly to our office but if not, feel free to ask our designers for help.  Silicone reacts differently than other manufacturing materials; ensure your specs are accurate before producing thousands of units.

Mould Creation

Like plastic injection moulding, GS Proto moulds are produced in our own factory, saving time and money.  First a master model is produced via CNC or 3D printing. Then a silicone mold is created from the master model, which can then be used to quickly produce up to 50 duplicates of the master in a variety of materials.

Silicone Part Casting

Mould are injected with silicone the same way plastic injection injects polymers but with a key difference: unlike plastic injection molding where materials are heated and injected, LSR is chilled and injected into a heated mold, then cured. Cured silicone parts will not melt or warp when subjected to heat.

Request a Free Quote Today

Liquid silicone rubber parts have almost limitless potential for commercial, industrial, and everyday use.  Silicone parts make much of our everyday lives possible without our even noticing.  Parts made with liquid silicone rubber are designer-preferred for:

  • Mechanical uses
  • Electrical applications
  • Combustion engines
  • Extreme temperatures
  • Sterilization procedures
  • Many more applications!

If you are ready for a free quote regarding your liquid silicone rubber molding, contact us today so we can share our capabilities with you.  Our sales staff is fluent in English, Mandarin, Japanese, and French.  Our designers and engineers have years of experience helping to create incredible silicone rubber castings for clients all across the globe.  For questions, information, or a free quote – contact us today!