Silicone Molding Manufacturer, In-House Since 2005
We are a silicone molding manufacturer, in-house since 2005. Silicone molding services cover compression molding, liquid silicone injection, overmolding, extrusion, die cutting, and CNC tooling. The plant is 15,000 m² in Dongguan, with presses up to 250 tons. ISO 9001, ISO 14001, and ISO 45001 certified.
Choosing a molding process
Tolerance, volume, and material grade decide the process. A solid gasket in medium volume is compression molded. A precise medical part in high volume is LSR injected. A metal or plastic part that needs a silicone seal is overmolded. We recommend the process that fits the part, even when it is not the one you asked for.
| Process | Best for | Spec to know |
|---|---|---|
| Compression molding | gaskets, seals, solid parts, medium volume | ±0.2 mm on parts |
| LSR injection | precise parts, medical, cleanroom, high volume | fast cycle, repeatable |
| Overmolding | silicone bonded to metal or plastic | insert and multi-material |
| Extrusion | tubing, cord, continuous profiles | cut to length |
| Die cutting | 2D parts from sheet | gaskets, seals, pads |
| CNC tooling | the mold itself | ±0.02 mm on the mold |
Each method has its own page with full specs.
What our engineers check on every project
- Dimensional drift. Every batch is inspected against CAD nominal before it ships.
- Shore A. Verified per ASTM D2240 on every lot.
- Parting line. Placed away from sealing and contact surfaces.
- Wall thickness and fill. Confirmed before tooling starts.
Silicone manufacturing methods
Prototyping & Design for Manufacturability (DFM)
Functional prototypes, mold trials, and performance validation. Collaborative engineering, rapid iteration, seamless transition to production. See silicone prototyping.
Compression Molding
Preforms are placed in heated molds, compressed, and cured. Cost-effective tooling, flexible designs, most silicone grades. Best for medium-volume gaskets, seals, and complex shapes at ±0.2 mm. See compression molding services and the compression molding guide.
Silicone Overmolding
Silicone molded onto or around another material for strong bonds and sealing. Bungs, lab device handles, electronics encapsulation, and wearables. See silicone overmolding.
Liquid Silicone Injection Molding
Liquid silicone injected into closed molds under pressure for fast, repeatable production. High precision, consistent, scalable, cleanroom and medical capable. Micro-components, medical devices, small to large volume parts. See LSR injection molding.
CNC Tooling for Silicone
High-precision molds for compression and injection, machined in-house to ±0.02 mm. Finished parts hold ±0.2 mm, with fast turnaround and cost-effective tool modifications. See CNC mold making.
Silicone Extrusion
Uncured silicone pushed through a precision die, then cured into fixed profiles. Tubing, cord, gaskets, window and door seals. HVAC, automotive, cleanroom, and food-grade. See silicone extrusion.
Custom Die Cutting
Silicone sheet cut into 2D shapes. High accuracy, low waste. Seals, electrodes, diagnostic pads, medical interfaces. See die cutting services and medical-grade silicone die cutting.
Order specifications
Materials
Platinum-cure silicone, food grade, medical grade, and general HTV. Shore A 10 to 80. Rubber compounds on request. Pantone matched. No TPU. Material comes from Elkem, Dow, and DuPont. See material sourcing.
Lead times
Tooling: 20 days. First samples: 1 to 2 days after tooling. Production scales with quantity; 30,000 pieces in 2 to 3 days. Air freight 3 to 5 days, sea 25 to 35 days. EXW and DDP both quoted.
Tooling
Steel tooling, STAVAX, 300,000+ shots. Prototype and production molds quoted separately. One tool per design, cavity count sized to your volume. You own the tool once paid; we store it free and ship it to another factory on request. Steel, not aluminum, because a steel tool moves from prototype to production without a second tool. See silicone prototyping.
MOQ and volume
No MOQ. Prototype tooling is designed for 100 to 200 pieces, so you can test the market before paying for production tooling. Reorders carry no tooling cost.
How to get a quote
Send your STEP or STL file and your real quantity, in millimetres. We return a free DFM review within 24 hours and a quote within 24 hours after. STEP preferred; STL, IGES, and DWG accepted. Exact-fit device parts need a 3D scan, not photos.
Compliance and confidentiality
ISO 9001, ISO 14001, ISO 45001. FDA 21 CFR 177.2600 and LFGB for food contact, on request. REACH and RoHS documented per grade. We sign your NDA or NNN and do not reuse designs.
Branding, packaging, assembly
Deboss, emboss, screen print, UV print, matte, gloss, custom texture. We source packaging, pack to your spec, and deliver to your 3PL or warehouse. Assembly in-house. Rigid plastic parts sourced for you.
Frequently asked questions
Which molding process fits my part?
Send the part and we recommend one. Tolerance, volume, and material decide it. If compression molding fits better than LSR, we say so.
Do you take low-volume orders?
Yes. No MOQ. Prototype tooling is designed for 100 to 200 pieces, enough for a market test before you commit to production tooling.
What precision do you achieve?
±0.2 mm on molded parts. Molds are CNC-machined to ±0.01 to 0.02 mm.
How fast are tooling and first samples?
Tooling takes 20 days. First samples 1 to 2 days after.
Which materials and durometers do you work with?
Platinum-cure, food grade, medical grade, general HTV. Shore A 10 to 80. No TPU.
How do you protect my design?
We sign your NDA or NNN and do not reuse designs.
Do I own my mold?
Yes. We store it free and ship it to another factory on request.
How do I get a quote?
Send STEP or STL plus your real quantity. Free DFM within 24 hours, quote within 24 hours after.