Wuxi Aoweite’s silicone rubber extruded products are manufactured to meet our customers’ unique demands. We supply a wide range of Chinese manufactured Silicone and Silicone Sponge Extrusions to meet numerous applications and specific customer requirements. Our Extrusions are available in a range of colors and densities from very soft to very dense and can even be custom blended to meet a specific requirement. We work with a variety of silicone materials, including fluorosilicone, silicone, silicone rubber, and custom compounds to deliver high quality silicone extrusions for a broad spectrum of applications. We create extruded silicone cords, tubing, gaskets and much more. Wuxi Aoweite employs innovative, lean manufacturing techniques and a skilled, experienced staff to produce custom extruded silicone products that match customer requirements and are delivered on time, every time. We can create extruded silicone products to meet a variety of industry specifications.
From small to large, simple to complex, we can supply custom rubber extrusions matching your exact application needs. Depending on how much value you want us to add to your process, we can either supply to your print and specifications for existing and proven applications, improve on them, or design and supply your custom rubber extrusion from scratch.
May it be a custom window or door seal or other custom shape, we can support you from material selection to specification definition, to prototypes and first articles to full production, in the format you need to be competitive.
Differences Between Molded and Extruded Silicone and Rubber
First, the rubber profiles are extruded from the die and are then cured in a line of microwave units to maintain the finished form. For extruded rubber products, they are forced through the dye of the cross section under pressure of an extruder. It is common for extruded products to be unvulcanized before being extruded. This leaves the rubber in a soft and malleable state post-extrusion. When this is the case, the product will need to be vulcanized before it can be used. Extrusion processes begin with a unvulcanized rubber compound that is fed into the extruder.
Next, the flutes of the revolving screw carry rubber into in the dye while increasing pressure and temperature as the material gets closer to the die. When the material reaches the die, the pressure forces the material through the openings. Here, it will swell in multiple degrees depending on the material compound and hardness. Due to a tendency of swelling, extruded parts require plus or minus tolerances on their cross sections. In the vulcanization process, extruded rubber will swell or shrink in both the cross section and length depending on the type of compound employed.
Once vulcanization is complete, a length of rubber extrusion will be reduced more in the center of the length than in the ends.
