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Stoppers
Stoppers, also known as bungs, are used to give an airtight seal to laboratory flasks and test tubes by fitting tightly inside a container's neck, preventing material from spilling out. Rubber stoppers are often sized with a stopper number or stopper size, using the stopper's top and bottom diameter dimensions. Sizing can vary among manufacturers. Stoppers are typically designed with a conical shape, but straight and flanged options are also available. Rubber stoppers are available in a solid design or with holes, also known as positions, present on the stopper's top. Positions are used to
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Stopper Solid Rubber 13 mm Bottom Diameter 20 pcs Fisher Catalogue
Stopper Solid Rubber 13 mm Bottom Diameter 20 pcs
Rubber Stopper for Butyrometer is ideal for sealing the bulbs of weighing butryometers.
Solid Rubber Stoppers Fisher Catalogue
Offers higher resilience, flexibility and can withstand many chemical agents in normal laboratory use.
Closed bottom end fits the standard taper neck
Closed bottom end fits the standard taper neck
Solid Rubber Stoppers Fisher Catalogue
Available in a variety of sizes ranging from 000 through 16
Solid Rubber Stoppers Fisher Catalogue
Available in a variety of sizes ranging from 000 through 16
PTFE Stopper, Self Releasing Thermo Fisher Scientific
Fisherbrand™ PTFE Stopper, Self Releasing fit standard taper ground glass joints with sealing rings and self releasing ring for ease of removal.
Wheaton™ Ultra Pure Straight Plug Stoppers Fisher Catalogue
Provides for extremely high chemical purity and low gas permeability. Wheaton™ Ultra Pure Straight Plug Stoppers are manufactured from an ultra pure bromobutyl formulation.
For narrow-aperture containers
For narrow-aperture containers
Turnover Septum Stoppers Fisher Catalogue
For narrow-aperture containers
For narrow-aperture containers