Understanding the Differences: Liquid Silica Gel vs. Solid Silica Gel

At DX, we pride ourselves on being at the forefront of silicone product manufacturing. Our expertise allows us to navigate the intricate world of silicone materials, particularly when it comes to the two main forms: liquid and solid silica gel. In this blog post, we’ll delve into the key differences between these two forms and how they translate into diverse applications.

Physical State and Molding Process

Liquid silica gel is characterized by its fluid state, offering high transparency and safe food-grade quality. It’s a material that doesn’t require vulcanizing agents during the molding process, which is typically sealed for molding.

On the other hand, solid silica gel appears in a solid state without any fluidity. It’s also transparent and environmentally friendly but requires a vulcanizing agent to expedite the curing process during open-mold injection molding.


The applications of liquid silica gel are vast, ranging from baby products and kitchen supplies to medical devices. It’s a material that can safely come into direct contact with food and the human body, making it ideal for products like silicone pacifiers, tooth gels, and medical implants.

Solid silica gel finds its use in daily necessities, industrial parts, and automotive accessories. This includes items like silicone bracelets, key cases, and various gadgets.

Safety and Transparency

Both liquid and solid silica gels are highly transparent and safe materials. The liquid form is particularly notable for its purity, as it is manufactured without the need for additional vulcanizing agents, making it exceptionally suitable for products that require stringent food-grade or medical-grade standards.

The Molding Method

The molding method for liquid silica gel, known as injection molding liquid silicone rubber (LSR), involves a simple process with high accuracy and output, benefiting from labor, electricity, and material savings. This method can produce all products that high-temperature glue can, but with greater efficiency.

In contrast, solid silica gel typically undergoes open-mold injection molding, which necessitates the addition of a curing agent to speed up the curing time.


At DX, we understand the importance of choosing the right type of silica gel for your product. Whether you need the fluidity and safety of liquid silica gel or the stability and versatility of solid silica gel, we have the expertise to guide you through the selection process and ensure the highest quality for your silicone products.

Visit our website to learn more about our products and how we can assist you in your silicone product manufacturing needs.

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