A coated rubber stopper is a type of laboratory stopper that has a rubber body with a coating or outer layer of another material, such as PTFE (polytetrafluoroethylene) or silicone. The coating provides additional chemical resistance and protection from potentially reactive substances, while the rubber body provides a secure and flexible seal.
The purpose of a coated rubber stopper in laboratory applications is to securely seal containers, such as test tubes, flasks, or bottles, to prevent contamination or evaporation of contents. The stopper can be inserted into the container opening, and its flexible rubber body will conform to the shape of the opening to provide a tight seal. The coating on the stopper can provide additional protection from chemicals or reagents that may react with or degrade the rubber material.
Coated rubber stoppers are commonly used in chemistry, biology, and medical laboratories, where a secure and reliable seal is necessary to maintain the integrity of the experiment or sample. They are available in a range of sizes and shapes to fit various container openings, and can be autoclaved or sterilized for repeated use.
Overall, coated rubber stoppers provide a convenient and reliable solution for sealing laboratory containers and preventing contamination or loss of valuable samples or reagents.
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