Guide to Liquid Silicone Rubber (LSR): Benefits, Uses & OEM Tips
Guide to Liquid Silicone Rubber (LSR): Benefits, Uses & OEM Tips
Guide to Liquid Silicone Rubber (LSR): Benefits, Uses & OEM Tips
Liquid Silicone Rubber (LSR) is a two-part platinum-cured silicone with excellent flexibility, heat resistance, and biocompatibility. It has become the top choice in medical, baby, and electronic silicone OEM applications.
What is Liquid Silicone Rubber (LSR)?
LSR is a low-viscosity silicone that cures quickly at high temperatures in an injection mold. Unlike solid HTV (High-Temperature Vulcanized) silicone, LSR offers superior precision for complex or small parts.
Key Benefits of LSR in OEM Manufacturing
-
🔹 High Precision: Perfect for complex geometries and micro parts.
-
🔹 Heat & Chemical Resistance: Withstands -50°C to 250°C and resists chemicals.
-
🔹 Medical-Grade Compatible: Biocompatible and FDA-approved.
-
🔹 Efficient Production: Fast curing speeds up mass production.
-
🔹 Durability: Long product lifespan, non-yellowing, UV resistant.
Common Applications of LSR
-
👶 Baby nipples & pacifiers
-
💉 Medical seals & valves
-
📱 Electronics keypads & waterproof gaskets
-
🧼 Kitchenware and soft grips
OEM Tips for LSR Projects
-
✅ Use precision steel molds with fine venting.
-
✅ Plan for flash removal in post-processing.
-
✅ Partner with experienced silicone mold experts like WH Silicone.
-
✅ Ideal for automated production—design with injection gates in mind.
LSR vs. HTV Silicone
| Feature | LSR | HTV |
|---|---|---|
| Viscosity | Low | High |
| Processing | Injection mold | Compression mold |
| Precision | Higher | Moderate |
| Cost | Higher tooling cost | Lower tooling |
| Output Volume | High | Medium |
Why Choose WH Silicone for Your LSR OEM Needs?
At WH Silicone, we offer full-cycle LSR production — from mold development to precision injection molding in ISO-certified environments. Whether you need medical, baby, or consumer-grade silicone parts, we bring 10+ years of expertise in custom LSR production.