Silicone extrusion is one of the most widely used manufacturing methods for producing continuous silicone profiles. From tubing and cords to complex bespoke shapes, extrusion allows silicone to be formed into consistent, high-performance components used across a wide range of industries.

But what exactly is silicone extrusion, how does it work, and what can be made from it?

What Is Silicone Extrusion?

Silicone extrusion is a manufacturing process where uncured silicone rubber is pushed through a shaped die to create a continuous profile. The shape of the die determines the final cross-section of the product, allowing for everything from simple round tubing to complex, custom-designed profiles.

Once extruded, the silicone is cured using heat to set its shape and lock in its material properties. The result is a durable, flexible and high-performance product that can be cut to the required length or further processed, depending on the application.

How the Silicone Extrusion Process Works

While the concept is straightforward, the process itself requires precision and control to ensure consistent quality.

Material preparation
Silicone compound is prepared with the required formulation, depending on the intended application. This can include considerations such as temperature resistance, hardness and compliance standards.

Extrusion through the die
The uncured silicone is fed through an extruder and forced through a die, which shapes the material into the desired profile. Maintaining consistent pressure and flow is essential to achieve uniform dimensions.

Primary curing (vulcanisation)
Immediately after extrusion, the silicone passes through a heated oven where it begins the curing process. This stage, often referred to as vulcanisation, sets the material’s shape and gives it its initial mechanical strength.

Post-curing in the oven
For many applications, particularly in food, dairy and pharmaceutical sectors, a secondary curing stage is required. This involves placing the extruded silicone in an oven for a controlled period to remove by-products and further stabilise the material.

Post-curing improves performance characteristics such as:

• Heat resistance
• Mechanical strength
• Chemical stability
• Compliance with food and medical standards

Cooling and finishing
After curing, the material is cooled and cut to size. Additional finishing processes may be applied depending on the final use, such as printing, spooling or assembly.

What Can Be Made Using Silicone Extrusion?

Silicone extrusion is highly versatile and can be used to produce a wide range of products.

Silicone Tubing

One of the most common extruded products, silicone tubing is used for fluid transfer in industries such as dairy, food and drink, pharmaceutical and industrial processing.

Find out more about our Silicone Tubing.

Silicone Cords and Profiles

Solid cords and custom profiles can be produced for use in sealing, gasketing and protective applications. These can be tailored to specific shapes and dimensions depending on the requirements.

Find out more about our silicone cords. 

Custom Profiles

Bespoke profiles can be designed to meet specific application needs, including complex geometries that integrate sealing, insulation or protective functions into a single component.

Find out more about our custom silicone profiles.

Why Choose Silicone for Extrusion?

Silicone is particularly well suited to extrusion due to its unique material properties.

• Excellent temperature resistance
• Flexibility and elasticity
• Resistance to UV, ozone and weathering
• Chemical stability
• Long service life

These characteristics allow extruded silicone products to perform reliably in environments where other materials may degrade or fail.

Where Silicone Extrusions Are Used

Silicone extrusions are used across a wide range of industries, including:

• Dairy and agricultural systems
• Food and beverage processing
• Pharmaceutical and medical applications
• Industrial manufacturing
• Electrical and thermal insulation

In each of these sectors, the ability to produce consistent, high-quality profiles is essential for performance and reliability.

Why Expertise Matters in Silicone Extrusion

Silicone extrusion is a versatile and reliable manufacturing process that enables the production of high-performance components for a wide range of applications. From simple tubing to complex custom profiles, it offers flexibility, consistency and durability in even the most demanding environments.

Producing high-quality silicone extrusions requires more than just equipment. Factors such as material formulation, die design, curing control and dimensional accuracy all play a critical role in the final product.

Working with an experienced manufacturer ensures that the extrusion process is carefully controlled and that the resulting components meet the specific demands of their application.

Looking for Silicone Extrusions?

If you’re looking for high-quality silicone extrusions tailored to your application, Silclear can help. We manufacture a wide range of silicone tubing, cords and bespoke profiles designed for performance, reliability and long service life.

Get in touch with our team today to discuss your requirements and find the right solution for your application.