Tapered rubber stoppers are used for sealing purposes. They fill the opening of laboratory equipment like test tubes, flasks, glassware, and beakers. Stoppers play an essential role in a high degree of sealing and chemical resistance. Cork is involved in the composition of stoppers.
Rubber stoppers’ primary function is to prevent fluid from escaping from the containers during a laboratory experiment. They are also used in order to avoid the spoilage of samples during lab work.
Tapered rubber stoppers have a high degree of flexibility and durability. Flexibility contributes to creating a high degree of sealing capacity. Chemical resistance exists in the properties of rubber stoppers by which stoppers prevent the experimenters from reactive compounds.
Chemists mostly use these stoppers in their experimental work. Chemists mix chemicals in flasks and test tubes, but they have no good screw cap. That’s why chemists use these stoppers to plugin the test tubes and flasks.
Tapered Rubber stoppers have different types. Some have a few holes but mostly have no holes in them. Stoppers with no holes are used for non-volatile compounds because they cannot produce pressure in the air-tight containers.
Some chemicals have high volatility, and they produce a high level of pressure in test tubes and flasks. So tapered rubber stoppers with holes are used for these chemicals to prevent test tubes’ breakage and flasks by high pressure.
Select the rubber stoppers of the correct size with your experimental containers. All the stoppers are manufactured as their upper side more comprehensive than the lower side. A stopper with an upper end more extensive than the lower end is suitable for the flasks and test tubes.
If you want to seal the opening of flasks and test tubes, you must insert the stopper’s narrow end. Don’t use extra force to push the stopper inside the container because you could break the container.