Precision LSR Injection Molding
Automated metering and closed-mold processing for intricate, consistent silicone components.
Request a Drawing ReviewExplore ProductsHow the Process Supports Your Part
Liquid silicone rubber injection molding meters two reactive components through a controlled mixing system and injects them into a heated closed mold. The process supports fine features, clean repeatability, automated demolding and scalable production for medical, electronics and precision industrial parts.
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 specific project documents.
Where This Capability Adds Value
Small precision seals and valve components
Reviewed around geometry, material behavior, service conditions and measurable acceptance criteria.
Thin walls and intricate flow paths
Reviewed around geometry, material behavior, service conditions and measurable acceptance criteria.
High-cavity production programs
Reviewed around geometry, material behavior, service conditions and measurable acceptance criteria.
Medical-device and laboratory components
Reviewed around geometry, material behavior, service conditions and measurable acceptance criteria.
Electrical connectors and insulation parts
Reviewed around geometry, material behavior, service conditions and measurable acceptance criteria.
Clear, translucent or tightly controlled cosmetic parts
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.
| Part data | 3D model with critical dimensions and datum scheme |
|---|---|
| LSR grade | Viscosity family, cure system and application requirements |
| Hardness | Target Shore A or Shore 00 where appropriate |
| Function | Pressure, flexing, sealing, optical and electrical needs |
| Cleanliness | Handling, packaging and environment expectations |
| Volume | Cavity strategy, forecast, ramp plan and automation target |
DFM Points Reviewed Before Tooling
- Design shutoffs to minimize flash at sealing and functional edges.
- Balance thin-wall flow length against material viscosity and venting.
- Avoid unnecessary undercuts that complicate automated demolding.
- Identify optical, sealing and cosmetic surfaces on the drawing.
- Plan cold-runner, valve-gate and cavity layout around expected volume.
Controls Defined Around Part Risk
- Metering-ratio and material-lot controls
- Cavity-to-cavity dimensional monitoring
- Flash, short-shot and contamination inspection
- Functional leak, compression or flex testing where specified
- Traceable inspection records defined by the project
Any dimensional capability, inspection frequency or certification statement must be agreed for the actual part and material.
From Drawing Review to Repeatable Production
Technical specification review
Document decisions and release the next stage only after review.
LSR grade and tooling concept
Document decisions and release the next stage only after review.
Flow, vent and demolding DFM
Document decisions and release the next stage only after review.
Mold and cold-runner manufacture
Document decisions and release the next stage only after review.
First articles and capability study
Document decisions and release the next stage only after review.
Validated automation and volume production
Document decisions and release the next stage only after review.
Industries and Application Scenarios
Medical and diagnostic equipment
Material and process recommendations remain project-specific.
Aerospace fluid and environmental systems
Material and process recommendations remain project-specific.
Defense electronics protection
Material and process recommendations remain project-specific.
Robotic grippers and sensor seals
Material and process recommendations remain project-specific.
Automotive and EV connectors
Material and process recommendations remain project-specific.
Precision consumer and laboratory devices
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
Why choose LSR injection molding?
It supports precise small features, automated processing and consistent high-volume production.
Can LSR produce very thin parts?
Often yes, but minimum wall depends on flow length, venting, material viscosity and geometry.
Is LSR automatically medical grade?
No. Suitability depends on the exact material documentation and the finished-device requirements.
Can LSR be overmolded?
Yes, when substrate compatibility, adhesion strategy, shutoff design and insert handling are validated.
What information speeds up DFM?
A STEP model, marked critical dimensions, material target, service environment, volume forecast and cleanliness needs.
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 the assumptions that need confirmation.
Recommended attachment: STEP/STP or PDF drawing with material, hardness, tolerances, service environment and annual quantity.