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Continuous precision manufacturing for silicone tubing, sealing strips, and complex cross-section profiles. 100% Platinum-cured for zero-odor, food-grade safety, and flawless dimensional stability over infinite lengths.
Choose silicone extrusion when your part has a continuous cross-section, such as round tubing, solid cord, rectangular strip, or a custom D-shaped or U-shaped profile. Process fit depends on the finished cross-section, wall balance, material hardness, dimensional requirements, curing behavior and required delivery length. Simple, balanced profiles are generally easier to control. If the product changes shape along its length or includes local bosses, holes, closures or complex three-dimensional features, silicone molding is likely to be a better manufacturing route.
Compare All Silicone Manufacturing ProcessesEfficient Continuous Production. Once the material, die and curing conditions are validated, silicone extrusion can produce long, continuous lengths of tubing, cord, strips and profiles with the same cross-section.
Limited to a Constant Cross-Section. The geometry must remain substantially unchanged along the extrusion direction. Local three-dimensional features normally require secondary processing or a different molding method.
Practical Tooling for Custom Profiles. A custom extrusion die is generally simpler than a multi-cavity molding tool, making the process practical for developing tubes, seals and application-specific profile sections.
Die Development May Require Iteration. The finished profile does not exactly match the die opening because silicone can expand after leaving the die and shrink during curing. Sampling and die adjustment may be required before final dimensions are approved.
Flexible Length & Delivery Options. Extruded silicone can be produced as continuous lengths and then cut according to the required finished length, supporting both long profiles and repeat cut components.
Dimensional Control Depends on the Whole Line. Material consistency, profile geometry, extrusion speed, curing, cooling and pulling tension can all affect cross-sectional dimensions, straightness and cut length.
Easy Splicing & Joining. Extruded cords and profiles can be easily cut to length and hot-vulcanized at the ends to form continuous, large-diameter waterproof O-rings or gaskets.
Additional Splicing Costs. If your final product requires a closed-loop gasket, the extruded strip must undergo a secondary hot-splicing process, which adds labor time compared to directly molding a complete ring.
These examples connect product structure and requirements to this manufacturing route.
Why it fits this process: A silicone straw has a hollow circular cross-section that remains constant along its length, making it a natural fit for continuous extrusion. Inner diameter, outer diameter, wall thickness, softness and cut length should be defined together, with the material and supporting documents selected according to the intended contact requirements.
Why it fits this process: A custom die can form continuous D-shaped, U-shaped and other profile sections for cushioning, edge protection or sealing applications. The design should define the installation gap, compression direction, critical contact surfaces and acceptable deformation rather than focusing only on the unloaded profile dimensions.
Why it fits this process: Round cords, square cords, flat strips and similar solid sections can be extruded continuously and supplied in defined lengths. Cross-section, hardness, color, cut length and functional requirements can be adjusted around the intended sealing, spacing, cushioning or assembly use.
Review the confirmed manufacturing resources and project parameters available for this process.
Extrusion-grade silicone is prepared with the required curing system and approved pigment. The compound is mixed until its material and color are uniform, then supplied continuously to the extrusion equipment under controlled conditions.
The screw advances the silicone compound through a custom-shaped die, forming a continuous uncured tube, cord, strip or profile. Material feed, screw speed and die design are coordinated to maintain the intended cross-section before curing.
The extruded silicone passes continuously through a hot-air curing line or another suitable vulcanization system. Curing conditions and line speed are controlled so the profile develops its final elastomeric properties without excessive distortion or incomplete cure.
After curing, the silicone profile is cooled under controlled conditions and cut to the approved length when required. Cross-sectional dimensions, wall thickness, inner and outer dimensions, cut length and visible surface condition are then checked against the defined requirements.
Peroxide curing is an older, cheaper method that often leaves a powdery residue, a distinct acidic odor, and tends to turn yellow over time. Platinum curing (which Yushineon strictly uses) utilizes a precious metal catalyst, resulting in a product that is completely odorless, highly transparent, non-yellowing, and perfectly safe for food (FDA/LFGB) and medical contact.
Extremely little! Because an extrusion die is essentially a flat 2D steel plate with a precise hole cut into it, tooling costs are usually just a fraction of the cost of an injection mold. Tooling can often be completed in 3 to 5 days.
Yes, this is a very common and cost-effective technique. We extrude a continuous silicone cord or specific profile, cut it to your exact required length, and then use a special hot-vulcanizing mold to splice the two ends together. The spliced joint is incredibly strong and maintains perfect IP68 waterproofing.
Absolutely. We offer in-line laser engraving or food-grade ink jet printing to mark continuous lines, brand logos, or measurement scales along the length of the extruded silicone.
Use extrusion when the same cross-section continues along the product and the required variation is mainly length. Use compression or injection molding when the part is an individual three-dimensional component, changes shape along its length, has closed ends, local holes, bosses, inserts or complex surface features. Some projects may combine extrusion with cutting, joining or secondary operations.
Share your drawing, reference image or sample, application requirements, material or performance priorities, expected quantity range, and other relevant project requirements. We will review the information and discuss the next suitable step.
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