If you’re searching for where to buy silicone rubber for your mould-making projects, crafts, or small production tasks, you’re in the right place. This guide will help you compare the key types of silicone rubbers available, highlighting their properties and best use cases—so you can match the right product to your creative or technical needs.

Silicone Rubber Types: Liquid vs Putty and What to Consider

When selecting silicone rubber for mould making or casting, it’s important to understand the differences between liquid and putty forms. Liquid silicone rubber is particularly well-suited for creating detailed and intricate shapes due to its flow characteristics, making it ideal for artefacts with fine detail, undercuts, and complex cavities. Silicone putty, on the other hand, is quicker and hand-mouldable, great for one-off or fast prototyping and easy enough for beginners and hobbyists.

Factors to compare include mixing method (liquids are usually bi-component A+B or 1:1 ratios), working time, curing speed, mechanical resistance, and whether a non-toxic or glove-free option is required. For reusable and professional-grade results especially with resin, wax, or even concrete, the type of silicone rubber you choose can make all the difference to the quality and longevity of your finished mould.

Why Detail and Compatibility Matter in Silicone Rubber Selection

Choosing the right silicone rubber ensures accurate moulds and repeated use. Some projects need a flowing liquid for crisp edges, while others benefit from putty that is simple and non-toxic. Select based on your object type, replication detail, and material compatibility.

“Liquid Mould” – Casting Liquid Silicone Rubber, 5-40 Shores, Bi-Component A+B

The “Liquid Mould” – Casting Liquid Silicone Rubber, 5-40 Shores, Bi-Component A+B is a versatile liquid silicone ideal for highly detailed moulds. This bi-component system requires careful mixing with its catalyst and is capable of picking up the smallest features and deep undercuts, making it highly popular for artistic foundries, detailed model reproductions, and small batch production in resin, wax, soap, or even polymer clay. With its excellent ability to flow and reproduce fine details, it is suitable for jewellery, bronze statue reproductions, and making multiple casts from a single mould. If your project involves intricate details, this liquid silicone rubber ensures precision and durability.

“Pure Mould” – Translucent Liquid Silicone Rubber for Mould Making

“Pure Mould” – Translucent Liquid Silicone Rubber for Mould Making stands out as a platinum-based, translucent silicone that offers easy mixing with a 1:1 ratio and rapid cure speeds as fast as 3–8 hours. It is safe, vegan-friendly, and completely solvent-free, with a non-toxic formulation ideal for hobbyists and professionals alike. Its transparency makes it easier to see the casting process in action—from resins and polyurethanes through to plaster and cement—while providing high mechanical strength for durable, reusable moulds. If you need a reliable silicone rubber for a wide variety of materials and want straightforward handling, this is an optimal choice.

“Liquid Mould” – Casting Liquid Silicone Rubber, 15 Shores 20.8 kg

For those working on larger or more volume-intensive tasks, the “Liquid Mould” – Casting Liquid Silicone Rubber, 15 Shores 20.8 kg provides the same technical excellence found in the other “Liquid Mould” options, but in a larger pack size and set shore hardness. Like its smaller counterpart, it enables the faithful reproduction of detail—even with pronounced undercuts—and is compatible across a range of casting materials: resin, soap, wax, plaster, and more. It’s especially suited to users who require multiple pulls from a mould without loss of definition.

“I–Gum” – Non-Toxic Silicone Putty for Mould Making

If you need an easy-to-use, non-toxic solution for custom moulds, try the “I–Gum” – Non-Toxic Silicone Putty for Mould Making. This two-component silicone putty mixes quickly in a 1:1 ratio and can be handled directly without gloves. It is ready for use with epoxy resin, polyurethanes, wax, and cements, and offers a generous working time (about 20 minutes) before setting. The putty format is perfect for making fast, one-off pieces or for craft settings, and is highly accessible for anyone new to mould making.

Choosing the Right Silicone Rubber for Your Project

Selecting the most suitable silicone rubber largely comes down to the level of detail required, the type of objects you intend to reproduce, the number of mould uses you expect, and your comfort with handling and mixing the materials. For professionals and high-detail crafters, bi-component liquid silicones offer the most reliability and fine definition, while putty silicones give immediacy and ease for smaller tasks or creative exploration. Be sure to review each product’s compatibility with your intended casting materials, and when in doubt, check the full silicon rubbers and Silicone Rubbers catalogue for further options and guidance.

Expert Tips for Better Mould Results

Mixing ratios, working time, and surface preparation greatly affect the result. Always follow the recommended instructions for each silicone rubber type, and avoid shortcuts to ensure consistent, high-quality casts. Browse our full silicone rubber selection for more tips and guidance.