Liquid Silicone Rubber (LSR) Injection Molding
LSR delivers elastic, temperature-stable, and biocompatible parts that thermoplastics cannot. We run cold-runner LSR tooling for flash-free seals, gaskets, and medical components — and overmold silicone onto plastic and metal for sealed, soft-touch interfaces.
LSR Capabilities
Platinum-cure silicone, documented process windows, and clean-controlled molding.
Liquid Silicone Rubber (LSR) Molding
Two-component platinum-cure silicone injected into heated molds — flash-free, biocompatible parts for seals, gaskets and medical components.
- Cold-runner tooling (zero flash)
- 40–70 Shore A range
- Medical & food-grade LSR
- Automated deflashing
LSR Overmolding
Silicone molded over a plastic or metal substrate for sealed, grippy, or soft-touch interfaces.
- TPU/PC + LSR bonds
- IP-rated sealing
- Ergonomic grips
- Wearable & device skins
Medical-Grade LSR
ISO 10993 and USP Class VI capable silicones for single-use, diagnostic, and skin-contact devices.
- Lot traceability
- Clean-controlled molding
- Sterilization-ready
- Validation support
LSR vs TPU & Thermoplastic Elastomers
Why specifiers pick liquid silicone over TPE/TPU.
| Property | LSR | TPU / TPE |
|---|---|---|
| Temperature range | −50 to 200 °C | −40 to 120 °C |
| Biocompatibility | ISO 10993 / USP VI | Limited grades |
| Flash | Cold-runner: near zero | Parting-line flash |
| Steam/autoclave | Excellent | Degrades |