Custom Silicone Extrusion
Continuous tubing, cords and profiles engineered around cross-section, sealing function and production length.
Request a Drawing ReviewExplore ProductsHow the Process Supports Your Part
Silicone extrusion continuously forms uncured compound through a shaped die, followed by controlled curing, cooling and take-up. The process is suited to tubing, cords and custom profiles supplied in coils, cut lengths, joined rings or fabricated assemblies.
Final feasibility, tolerance, tooling and test recommendations are confirmed after reviewing the actual drawing, material and service environment.
LSAN Silicone project evidence
LSAN Silicone supports custom silicone component development from Nanjing, China, drawing on more than 30 years of silicone manufacturing experience and a 5,000 m² production facility.
Company information last reviewed August 2026. Process claims and material declarations are supplied only when supported by the project documents.
Where This Capability Adds Value
Medical and industrial silicone tubing
Reviewed around geometry, material behavior, service conditions and measurable acceptance criteria.
D-, P-, U- and channel profiles
Reviewed around geometry, material behavior, service conditions and measurable acceptance criteria.
Door, enclosure and cabinet seals
Reviewed around geometry, material behavior, service conditions and measurable acceptance criteria.
Solid and sponge silicone cords
Reviewed around geometry, material behavior, service conditions and measurable acceptance criteria.
Cut-to-length and miter-joined gaskets
Reviewed around geometry, material behavior, service conditions and measurable acceptance criteria.
Co-extruded or color-coded profiles where feasible
Reviewed around geometry, material behavior, service conditions and measurable acceptance criteria.
Information Our Engineers Need
Clear inputs reduce assumptions, shorten DFM review and produce a more meaningful quotation.
| Cross-section | Dimensioned drawing with all radii, hollows and datum points |
|---|---|
| Material | Solid or sponge silicone, cure system and hardness |
| Function | Compression, sealing gap, flow, bend radius or vacuum |
| Length | Coils, straight lengths, cut pieces or joined frames |
| Tolerance | Critical profile dimensions and acceptable bow or twist |
| Volume | Annual meters, order length and packaging requirement |
DFM Points Reviewed Before Tooling
- Keep hollow walls balanced to support stable curing.
- Use radii at internal corners and avoid unsupported thin fins.
- Define which dimensions are critical after cure and take-up.
- Account for die swell and material-specific shrinkage.
- Specify joining, adhesive, corner and surface requirements separately.
Controls Defined Around Part Risk
- Compound lot and cure-condition control
- Online or sampled dimensional checks
- Surface inspection for splits and distortion
- Length, cut-angle and joint inspection
- Packaging controls to prevent deformation in transit
Any dimensional capability, inspection frequency or certification statement must be agreed for the actual part and material.
From Drawing Review to Repeatable Production
Profile and service review
Document decisions and release the next stage only after review.
Material and die concept
Document decisions and release the next stage only after review.
Extrusion DFM and tolerance agreement
Document decisions and release the next stage only after review.
Die manufacture and trial run
Document decisions and release the next stage only after review.
First-article profile inspection
Document decisions and release the next stage only after review.
Controlled production, cutting and fabrication
Document decisions and release the next stage only after review.
Industries and Application Scenarios
Medical fluid and device systems
Material and process recommendations remain project-specific.
Aerospace cabin and equipment seals
Material and process recommendations remain project-specific.
Defense enclosures
Material and process recommendations remain project-specific.
Robotics cable and dust protection
Material and process recommendations remain project-specific.
Food-processing equipment
Material and process recommendations remain project-specific.
Industrial ovens, doors and cabinets
Material and process recommendations remain project-specific.
Industry references describe typical application contexts and do not imply approval for a regulated end use.
Common Questions
What shapes can be extruded?
Tubing, cord and many open or hollow profiles are possible when the cross-section can be continuously formed and cured.
Can profiles be supplied as frames?
Yes. Cut lengths may be mitered, joined or fabricated after validating the joint requirement.
Are very tight tolerances possible?
Critical tolerances depend on cross-section, material, cure method and profile stability.
Can sponge silicone be extruded?
Often yes, but density, skin, compression and dimensional requirements must be defined.
What information is needed?
Send the cross-section drawing, material and hardness, service environment, required length format and annual meter volume.
Build the Right Manufacturing Route
Send Your Drawing for Engineering Review
Tell us what the component must do, where it operates and how many parts you need. Our team will review the manufacturing route and assumptions that need confirmation.
Recommended attachment: STEP/STP or PDF drawing with material, hardness, tolerances, service environment and annual quantity.