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Why Liquid Silicone Rubber (LSR) Is Ideal for High-Precision Manufacturing

LSR injection molding machine operating in a cleanroom

In today's demanding industries — from medical devices to automotive systems — precision is non-negotiable. That’s where Liquid Silicone Rubber (LSR) comes in. Known for its exceptional stability, flow characteristics, and performance under extreme conditions, LSR is the gold standard for high-precision silicone manufacturing.

As a professional silicone OEM factory, we provide LSR molding services for clients seeking consistent quality and complex product geometries.

What Is Liquid Silicone Rubber (LSR)?

LSR is a two-part platinum-cured silicone compound that remains liquid until cured under heat and pressure. It’s processed via injection molding, which makes it ideal for high-volume, high-precision production.

Key characteristics include:

  • Low viscosity for fine detail molding

  • High thermal stability

  • Excellent electrical insulation

  • Chemical and UV resistance

  • Biocompatibility (ISO 10993 / USP Class VI)

Why LSR Is Ideal for Precision Manufacturing

  1. Tight Tolerances
    LSR allows for production with tolerances as fine as ±0.02mm, ensuring reliability in critical applications.

  2. Repeatable Accuracy
    Ideal for mass production — every cycle yields consistent, defect-free parts.

  3. Flash-Free, Fully Automated Molding
    Reduces labor costs and post-processing time, improving lead times.

  4. Micro-Molding Capability
    Enables the creation of tiny, intricate parts such as seals, valves, and gaskets.

  5. High Throughput and Cleanroom Compatibility
    LSR injection molding is fast, clean, and suitable for ISO Class 7 and 8 environments.

Key Applications of LSR

We supply LSR components to diverse sectors:

  • Medical: Syringe stoppers, valves, implant-grade parts

  • Automotive: Electrical connectors, gaskets, vibration dampers

  • Consumer Electronics: Wearable seals, buttons, membranes

  • Industrial: O-rings, insulators, high-temp components

All our LSR products are manufactured with FDA, ISO 13485, and RoHS-compliant materials.

OEM LSR Molding Services

We offer comprehensive LSR solutions, including:

  • LSR mold design and simulation

  • Cleanroom molding capabilities

  • Overmolding services (LSR to plastic/metal)

  • Prototyping and small-batch runs

  • Mass production with quality control

Our team works closely with OEM clients to reduce time-to-market while maintaining top-tier accuracy.

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