Hangzhou Bright Rubber Plastic Product Co., Ltd. is one of the leading manufacturers and suppliers of medical grade silicone plug in China. If you're going to buy medical grade silicone plug made in China, welcome to get more information from our factory. We also accept customized orders.
Material & Biocompatibility
This stopper is manufactured from high-purity, platinum-cured silicone, a material renowned for its excellent biocompatibility and chemical inertness. It is free from plasticizers, latex, and heavy metals, and complies with USP Class VI and ISO 10993 standards for medical devices. The silicone does not leach harmful substances into the contained media, ensuring the purity and safety of pharmaceuticals, reagents, and biological samples. Its non-toxic, odorless, and tasteless nature makes it ideal for direct contact with sensitive medical fluids and diagnostic reagents.
Sealing & Self-Sealing Performance
The stopper is designed to provide a tight, leak-proof seal for glass vials and bottles. Its flexible silicone body conforms to the neck of the container, creating a secure barrier against moisture, air, and contaminants. A key feature is its self-sealing capability: when pierced by a needle for sample extraction or injection, the silicone reseals itself upon needle withdrawal, preventing leakage and maintaining the integrity of the contents. This makes it ideal for multi-dose vials and diagnostic applications.
Temperature & Sterilization Resistance
Silicone stoppers offer exceptional thermal stability, withstanding continuous temperatures from -60°C to +200°C. This allows them to be sterilized using autoclaving, dry heat, gamma irradiation, or ethylene oxide (ETO) without degrading or losing their sealing properties. The material remains flexible and elastic even after repeated sterilization cycles, ensuring a reliable seal throughout the product's shelf life. This makes silicone stoppers suitable for pharmaceutical manufacturing processes that require strict sterilization protocols.
Chemical Compatibility & Low Absorption
Silicone is chemically inert and resistant to a wide range of chemicals, including acids, bases, and solvents. Unlike rubber stoppers that may swell or degrade, silicone maintains its dimensional stability and sealing force when exposed to aggressive media. It also exhibits low absorption of proteins and other biological molecules, making it ideal for diagnostic reagents and biological samples where sample integrity is critical. This chemical resistance ensures the stopper does not interact with the contained media.
Application Scope
This versatile silicone stopper is widely used across the medical, pharmaceutical, and laboratory industries. It seals glass vials, bottles, and test tubes used for blood collection, diagnostic reagents, and pharmaceutical packaging. It is also used in laboratory equipment, analytical instruments, and medical devices. Available in a comprehensive range of sizes, colors (such as the blue and grey shown), and hardness levels, it can be customized to meet the specific requirements of any application.
Company Information
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