Liquid Silicone Rubber (LSR) molding has become the go-to manufacturing process for producing high-precision, biocompatible, and durable silicone components. Its versatility, speed, and superior material properties make it ideal for industries that demand accuracy and reliability—such as medical, automotive, electronics, and food-grade applications.
At DXTSEALS, we specialize in custom LSR molding solutions, providing silicone parts that meet the highest standards of quality, safety, and performance.
What Is Liquid Silicone Rubber (LSR) Molding?
LSR molding is a high-speed, injection-based process that uses a two-component liquid silicone rubber formulation. These components are mixed and injected into a heated mold where the material vulcanizes rapidly into its final form.
LSR Molding Process Overview:
1️⃣ Material Metering & Mixing – Two liquid components (A & B) are precisely mixed
2️⃣ Injection Into Mold – The mixture is injected under pressure into a closed, heated mold
3️⃣ Curing & Cooling – The silicone cures quickly inside the mold, forming the finished shape
4️⃣ Demolding & Inspection – The part is removed and quality-checked
5️⃣ Post-Processing (if needed) – Deflashing, trimming, or secondary treatments
Benefits of LSR Molding
1. Exceptional Precision and Repeatability
✔ Maintains tight tolerances for intricate designs and micro features
✔ Ideal for thin-walled parts and complex geometries
2. Superior Material Properties
✔ High temperature resistance (up to 200°C)
✔ Outstanding flexibility, clarity, and compression set resistance
✔ Excellent electrical insulation and weather resistance
3. Biocompatibility and Safety
✔ Medical-grade LSR is non-toxic, hypoallergenic, and FDA-compliant
✔ Perfect for healthcare, baby products, and food contact items
4. Automated & Efficient Production
✔ Fully automated process ensures low labor cost and minimal waste
✔ Ideal for high-volume manufacturing with consistent product quality
Common Applications of LSR-Molded Parts
1. Medical Devices & Healthcare
✔ Respirator seals, syringe stoppers, valves, and tubing
✔ Wearables and implantable silicone components
2. Automotive Industry
✔ Gaskets, seals, connectors, and vibration isolators
✔ Under-the-hood components that withstand heat and chemicals
3. Consumer Goods & Baby Products
✔ Pacifiers, bottle nipples, and kitchenware
✔ Waterproof covers and wearable straps
4. Electronics & Industrial Uses
✔ Keypads, switch covers, insulators, and LED lens caps
✔ Waterproof and dustproof enclosures
Why Choose DXTSEALS for LSR Molding?
At DXTSEALS, we bring unmatched expertise and precision to every silicone molding project:
✅ Custom Mold Design – Tailored to your exact specifications
✅ Certified Medical & Food-Grade Materials – Safe and compliant
✅ Cleanroom Manufacturing Options – For sensitive applications
✅ Fast Prototyping & Mass Production – Scalable solutions for every stage
✅ Full Quality Control – From raw material to final product delivery
Conclusion
For industries that require precision, safety, and performance, LSR molding is the ideal solution. Whether you need medical-grade silicone parts, automotive seals, or consumer-friendly components, DXTSEALS delivers custom-engineered Liquid Silicone Rubber products with the highest standards in mind.