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This 100-pack of Green Screw Neck Caps is designed for 12 x 32 mm vials and includes a septum, simplifying sample preparation for transferring or loading samples. The caps undergo a strict quality control process to ensure proper performance and are designed to fit laboratory vials. Optimal performance is achieved when used with compatible vials.
Designed for 12 x 32 mm vials.
Includes a preslit PTFE/Silicone septum.
Undergoes a strict quality control process.
Features a green cap color.
Packaged with 100 units per package.
Closure type is screw neck.
Seal material is preslit PTFE/Silicone.
Intended for sample preparation applications.
Encompass Procurement Services Non-distribution item offered as a customer accommodation; additional freight charges may apply. Learn More
This screw cap features an electron-bonded septum that prevents dislodgement during shipment or use. It is designed for sample preparation methods involving heating or cooling, offering high temperature resistance and chemical compatibility with a wide range of laboratory solvents and chemicals. The septum allows for multiple syringe needle punctures while maintaining an effective seal.
Well-known as the best quality rubber turn-over closure with serrated stopper Suba-Seal brand is available exclusively from Sigma-Aldrich. Ideal for air and moisture-sensitive chemistry procedures. After piercing with non-coring needle rubber closes puncture providing air and moisture tight seal to protect contents of vessel or container from atmosphere.This closure has turnover flange molded to grip outside of container neck promoting a double seal in conjunction with annular serrations on hollow plug. Annular serrations depress themselves against the inside wall of the bottle neck making each serration a suctions sealing point.Storage Note for Natural Rubber Septa Store septa in a closed bag out of sunlight to retard blooming which is the formation of a whitish film on the surface of the rubber. Blooming is a natural process and does not affect performance. Remove visible bloom by washing or wiping off before use.Note for extra security when using large bore transfer needles fa
Encompass Procurement Services Non-distribution item offered as a customer accommodation; additional freight charges may apply. Learn More