In the medical industry, the material safety of every component directly impacts patients' lives and health. Medical-grade liquid silicone rubber (LSR) products from Chinese manufacturers, boasting excellent biocompatibility, high-low temperature resistance and chemical stability, are extensively deployed in core medical scenarios including respiratory masks, infusion catheters, surgical instruments and implantable devices
The first and most critical step in selecting high-quality medical-grade liquid silicone rubber (LSR) products is to verify qualification certifications. Legitimate medical-grade products must hold the ISO 13485 medical device quality management system certification and comply with internationally recognized biocompatibility standards such as the U.S. FDA and EU CE. Additionally, manufacturers must provide complete third-party test reports explicitly demonstrating that the products are free from cytotoxicity, sensitization and carcinogenicity.
Secondly, examine the raw material sourcing. Premium products use high-purity imported medical-grade LSR raw materials that are free from harmful substances like plasticizers and heavy metals. The finished products feature high transparency, are completely odorless, and have a smooth surface free from any impurities.
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Comparison Dimension |
Regular Silicone Products |
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Raw Material Purity |
High-purity fumed silica silicone, free of impurities |
Precipitated silica silicone, containing filler impurities |
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Vulcanization Process |
Platinum vulcanization (no residue) |
Peroxide vulcanization (with residue) |
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Biocompatibility |
Passed cytotoxicity, sensitization and carcinogenicity tests |
No medical-grade biocompatibility |
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Core Certifications |
FDA, CE, ISO 13485 |
Some only have food-grade certification or no certification |
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Temperature Resistance Range |
-60℃ ~ 200℃ (customizable for higher temperatures) |
-40℃ ~ 150℃ |
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Extractables |
Extremely low, no harmful substance extractables |
Prone to extract small molecules and plasticizers |
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Typical Applications |
Respiratory masks, infusion catheters, surgical instruments, implantable devices |
Sealing rings, daily necessities, industrial accessories |
Production technology also plays a decisive role in the quality of medical-grade LSR products. Reliable manufacturers conduct production in Class 10,000 or higher standard clean rooms and adopt precision liquid silicone rubber injection molding processes to ensure products have strict dimensional accuracy and smooth, burr-free surfaces, fundamentally reducing the risk of bacterial residue.
Meanwhile, a comprehensive full-process quality control system implements rigorous checks at every stage from raw material warehousing to finished product shipment, guaranteeing consistent and reliable quality for every production batch.
We are a Chinese original manufacturer specializing in the R&D and production of medical-grade liquid silicone rubber (LSR) products, with over 20 years of industry experience. Equipped with a complete set of professional in-house testing equipment, all our products have obtained multiple international certifications including FDA, CE and ISO 13485.
We provide customers with one-stop customized services covering product design, mold development and mass production, and support OEM/ODM processing based on drawings or samples. We also offer free product samples and biocompatibility test reports. Contact us now to get your exclusive customized solution and the latest preferential quotation, safeguarding the safety of your medical products.
