Custom Silicone Rubber Molded Parts

FlexiTurn provides custom silicone rubber molding services for components such as the translucent protective caps, tabbed sealing gaskets, and barbed fluid connectors shown above. Every part is produced to customer-supplied 2D or 3D CAD data. FlexiTurn is a custom manufacturing service provider. The service delivered encompasses the full production cycle: mold design coordination, tool fabrication, material selection, molding, deflashing, post-curing, and dimensional verification.

Molding Processes & Capabilities

Complex silicone geometries with undercuts, thin walls, and sealing lips require mold-based forming, not CNC cutting. FlexiTurn coordinates three primary silicone molding routes:

Compression Molding: A pre-measured silicone charge is placed into a heated mold cavity and compressed into shape. Suitable for medium-to-high hardness HCR silicone and larger parts.

Transfer Molding: Silicone is placed in a transfer pot and forced into the closed mold cavity under heat and pressure. Ideal for parts with metal inserts, complex geometries, and tighter tolerance control than standard compression molding.

Liquid Silicone Rubber (LSR) Injection Molding: Two-component platinum-catalyzed LSR is mixed and injected into a heated mold. Ideal for high-volume precision parts, thin walls, and complex geometries.

FlexiTurn's tooling network applies CNC machining to cut mold cavities, cores, and steel inserts to the required geometry, ensuring dimensional fidelity before molding begins.

Available Materials & Compliance

FlexiTurn molds silicone compounds matched to your application:

Platinum-cured LSR & HCR: High purity, no peroxide by-products. Available with compliance documentation for FDA 21 CFR 177.2600, USP Class VI, and BfR. Hardness range Shore A 20–80. Temperature range -60°C to +200°C (short-term to +230°C).

Color Options: Translucent (natural), black, or custom-pigmented upon request.

Tolerances, Quality & Finishing

Molded silicone tolerances follow ISO 3302-1 or DIN 7715. Typical achievable tolerances depend on dimension and hardness; for nominal sizes 0–6 mm, M2 class is ±0.10 mm, M3 is ±0.20 mm.

To ensure material stability and eliminate residual volatiles, FlexiTurn performs post-curing (post-baking) where required. We utilize cryogenic deflashing to precisely remove parting-line flash without damaging delicate sealing edges. In-process visual and dimensional inspections are conducted. The quality management system is ISO 9001:2015 certified.

Why Choose FlexiTurn

DFM & Material Expertise: We review your CAD data, recommend the appropriate molding process (compression, transfer, or LSR), and specify hardness, color, and compliance grade.

Tooling Coordination: Direct coordination of mold cavity manufacturing and tool trials to ensure first-article success.

Deflashing & Post-Curing: Complete post-molding processing to meet strict cosmetic and functional sealing requirements.

Prototype to Production: Low-volume compression molding to high-volume LSR injection.

Multi-Process Flexibility: FlexiTurn also machines metal and engineering plastic components, allowing consolidation of structural hardware and silicone seals from one supplier.

FlexiTurn serves industries including consumer electronics, automation machinery, telecom, and medical devices.

Get Started

Submit your 2D/3D CAD files, specify hardness (Shore A), color, regulatory documentation requirements (FDA / USP Class VI), and target quantity. FlexiTurn's engineering team will review your design, recommend the molding process, and deliver a detailed quotation.

Contact FlexiTurn today to discuss your custom silicone molding requirements.

FlexiTurn – Precision Machining, Delivered with Trust.

Q1. What types of machining services do you offer?

We provide comprehensive CNC turning and milling services. FlexiTurn machines are equipped with 8-station programmable turrets and support both turning and 5-axis milling operations, making them suitable for everything from simple cylindrical parts to complex multi-axis components.

Q2. What materials can you work with?

We machine a wide range of materials including carbon steel, stainless steel, aluminum, plastics, and other engineering-grade materials. If you have a specific material in mind, just send us your requirements and we'll confirm feasibility.

Q3. What is your typical lead time?

Lead times vary depending on part complexity, quantity, and material availability. For prototypes and small-batch runs, we typically deliver within 5–10 business days. For high-volume production, we'll provide a customized schedule after reviewing your drawings. Contact us with your project details for an accurate timeline.

Q4. How do you price your services?

Pricing is based on several factors: material cost, machining time, tooling requirements, setup complexity, and order quantity. We offer competitive rates for both low-volume prototypes and high-volume production runs. Request a quote with your CAD files or drawings and we'll get back to you within 24 hours.

Q5. What quality control measures do you have in place?

We follow strict quality control procedures throughout the machining process. Our CNC systems support programmable precision down to 1 μm, ensuring high accuracy and repeatability. Every batch undergoes dimensional inspection before shipping, and we can provide inspection reports upon request.