Liquid Silicone Rubber (LSR) Components
High-precision, high-purity silicone parts produced by liquid silicone rubber injection molding — for medical, baby, electronics and automotive applications that demand fine detail and tight tolerances.
Precision Parts With Fine Detail
LSR injection molding cures a two-part liquid silicone quickly in a heated mold, delivering consistent, high-precision parts with excellent part-to-part repeatability — ideal for small, detailed and high-purity components.
- Medical seals & valves — high-purity, biocompatible
- Baby bottle nipples & teethers — soft, gum-safe
- Electronic keypads & buttons — tactile, precise
- Automotive sealing components — durable, tight tolerance
Why Choose LSR Injection Molding
LSR delivers advantages over compression molding for the right applications.
High Precision
±0.1% shot-weight repeatability and mold cavities machined to ±0.01 mm for consistent, precise parts.
High Purity
Closed, automated process run in an ISO Class 7 cleanroom (ISO 14644-1:2015) for medical and high-purity applications.
Cold-Runner Efficiency
Cold-runner systems reduce material waste and support cost-effective, high-volume production.
| Application | Recommended grade | Typical hardness |
|---|---|---|
| Medical / pharmaceutical | Medical-grade platinum-cured silicone | 30 – 50A |
| Baby & infant care | Food-grade silicone (FDA / LFGB) | 40 – 50A |
| Electronics & keypads | Solid silicone rubber (RoHS / REACH) | 60 – 70A |
| Automotive sealing | High-temperature silicone compound | 60 – 70A |
LSR Injection Molding FAQ
Have a High-Precision Part to Mold?
Send your drawing or sample. We will confirm whether LSR or compression molding is the better fit and quote accordingly.
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