What Is Silicone Overmolding? What Is Silicone Used For?

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The silicone overmolding applies to a wide variety of industrial and manufacturing industries. Silicone overmolding, also known as silicone rubber compression overmolding, liquid silicone rubber overmolding. Silicone overmolding is more just a layering process. Rather, the overmold is assembled with the substrate material.

What is silicone overmolding?

Silicone overmolding is an injection molding process that molds silicone over, under, or through a substrate material to complete the final part. By allowing product designers to combine two or more materials, this manufacturing process supports variations in durometer and rigidity. 

What is the difference between insert molding and overmolding?

Overmolding is essentially a type of insert molding. The first component is made inside an injection mold, and it is then placed into a second mold to add the over-molded material.

What material is used for overmolding?

When it comes to selecting overmolding materials, the most critical factor is making sure the materials are compatible. Materials must bond together both chemically and physically in order to produce a strong finished component with a long service life. Some of the most common overmolding materials include:HDPE/ABS/PMMA/POM/PEEK/PEI/PBTR

What is silicone overmolding used for?

Silicone rubbers are widely used in industry. Silicone rubber is generally non-reactive, stable, and resistant to extreme environments and temperatures while still maintaining its useful properties. Silicone rubber can be found in a wide variety of products. Silicone often used for wearable devices, mechanical reinforcement, gaskets, seals, fluidic components, medical catheters, medical implants, baby products, promotional products.


In Todsilicone, We offer OEM manufacturing service of silicone injection molding and overmolding products for global brand customers. Helping customers achieve value is our aim from concept design, prototype sample, tooling development, mass production to final shipment.