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

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:
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Low viscosity for fine detail molding
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High thermal stability
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Excellent electrical insulation
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Chemical and UV resistance
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Biocompatibility (ISO 10993 / USP Class VI)
Why LSR Is Ideal for Precision Manufacturing
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Tight Tolerances
LSR allows for production with tolerances as fine as ±0.02mm, ensuring reliability in critical applications. -
Repeatable Accuracy
Ideal for mass production — every cycle yields consistent, defect-free parts. -
Flash-Free, Fully Automated Molding
Reduces labor costs and post-processing time, improving lead times. -
Micro-Molding Capability
Enables the creation of tiny, intricate parts such as seals, valves, and gaskets. -
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:
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Medical: Syringe stoppers, valves, implant-grade parts
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Automotive: Electrical connectors, gaskets, vibration dampers
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Consumer Electronics: Wearable seals, buttons, membranes
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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:
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LSR mold design and simulation
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Cleanroom molding capabilities
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Overmolding services (LSR to plastic/metal)
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Prototyping and small-batch runs
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Mass production with quality control
Our team works closely with OEM clients to reduce time-to-market while maintaining top-tier accuracy.