Silicone Rubber Insights – Topsil Silicone Blog

How Will China’s Cancellation of Export Tax Rebates Affect Silicone Market Prices?

How Will China’s Cancellation of Export Tax Rebates Affect Silicone Market Prices? I see many exporters facing a direct cost shock. I see many buyers facing price confusion[^1]. I know that this mix can turn the silicone market[^2] noisy very fast. I believe China’s cancellation of the export VAT rebate[^3] for silicones in primary forms […]

How to Make Silicone Molds: A Detailed Guide

Silicone molds are widely used in resin casting, concrete decoration, soap making, candle production, prototyping, and many other applications. But making a high-quality silicone mold is not just about pouring rubber over an object and waiting for it to cure. The final result depends on choosing the right silicone, preparing the master correctly, controlling bubbles, […]

What precautions should be taken when importing molding silicone from China?

Importing silicone from China is tricky. If you focus only on price, you might lose your entire investment. You need to know the risks first. The most important precaution is to prioritize [quality stability](https://elastostar.com/silicone-rubber-how-long-does-it-last/)[^1] over the lowest price. Many cheap options rely on recycled “cracking material,” which leads to [unstable viscosity](https://www.otdchem.com/blog/how-to-troubleshoot-common-issues-with-silicone-emulsions)[^2] and poor curing. Always […]

RTV Silicone vs RTV-2 vs Silicone | Key Differences Explained

You know that moment when you stand in the hardware store, staring at rows of silicone tubes, and realize you have no idea which one fits your project. Yeah, we have all been there. Here is the thing about RTV silicone. It shows up everywhere. Sealing your shower. Protecting circuit boards. Creating molds for chocolate […]

Platinum-Cure Silicone vs Tin-Cure Silicone: What’s the Difference?

When starting a mold-making project, one of the most important decisions is choosing between platinum-cure silicone and tin-cure silicone. Both materials are RTV (Room Temperature Vulcanizing) silicone rubbers, curing at room temperature without high heat or pressure. However, they use different chemical reactions to crosslink, resulting in different shrinkage, tear strength, mold life, cost, and […]

Why Is My Silicone Rubber Curing Too Fast?

You’ve carefully measured and mixed your silicone, ready to create the perfect mold. But almost instantly, it starts to thicken, turning into an unusable gel. Now your project is at risk, and valuable material is wasted. The most common reasons your silicone cures too fast are high ambient temperature[^1], the age of the curing agent[^2], […]