01POWER & ELECTRICAL SUPPLIES
Secure seals for your scientific experiments
A quiet necessity on the bench, these black rubber stoppers sit flush within glassware, maintaining the integrity of your samples without visual clutter. Their matte finish blends into any workspace, from a university lab to a dedicated home corner.
Designed for test tubes and flasks, they provide a reliable seal for chemical and pharmaceutical applications. The tapered profile ensures a snug fit that is simple to manage, making them ideal for researchers and hobbyists alike.
02MATERIALS
Durable rubber for repeated use
Crafted from smooth rubber, these plugs are designed to withstand regular handling in chemical environments. The material remains flexible enough to grip glass securely yet resilient enough to maintain its shape over time. This durability ensures the stopper does not degrade quickly, preserving the seal across multiple experimental cycles.
04DETAILS
Precise dimensions for standard glassware
Each stopper measures either 2.50 x 2.50 x 2.30 cm or 1.70 x 1.70 x 2.30 cm, accommodating different neck diameters. A central hole with a 0.50 cm diameter allows for probes or stirring rods to pass through while keeping contents contained. The compact size means they occupy very little space in a drawer or kit.
PRACTICALITY
Ten-piece set in a compact carton
The package includes ten stoppers, providing sufficient quantity for ongoing projects or shared workspaces. The packing carton measures 11 x 22 x 33 cm, a manageable footprint for storage on shelves or in cabinets. This volume ensures you have spares available when one needs replacing, keeping your workflow uninterrupted.
AT A GLANCE
The key points
- Black rubber construction in two distinct sizes
- Tapered shape allows easy insertion and removal
- Central hole diameter of 0.50 cm
- Packaged set contains ten stoppers
- Compact design suits home or lab storage
About this product
Description:If you are looking for some test tube stoppers, then you must not miss our rubber plugs. Simple in structure, very easy to use, suitable for professional and personal use. Small size and light weight, these rubber plugs are easy to take, has good sealing effect for you to use rest assured. Features:-Color:black. -Material:Rubber -Size:2.50X2.50X2.30cm/0.98X0.98X0.90in-Size:1.70X1.70X2.30cm/0.67X0.67X0.90in-Hole diameter: 0.50cm/0.20inch.-Perfect for chemical industry, medicine and other scientific researches use, these rubber sealing stoppers fit your demands.-The rubber plugs can be used with the test tube, a necessary sealing rubber stopper for experiments.-These rubber stoppers are using a suitable taper shape design, easy to insert and pull.-Small and compact, easy to store and use, not taking up much space of home or laboratory.-Smooth and durable, these sealing stoppers for test tubes will not do damage to the bottles or test tubes in laboratory.
Perfect for chemical industry, medicine and other scientific researches use, these rubber sealing stoppers fit your demands.The rubber plugs can be used with the test tube, a necessary sealing rubber stopper for experiments.These rubber stoppers are using a suitable taper shape design, easy to insert and pull.Small and compact, easy to store and use, not taking up much space of home or laboratory.Smooth and durable, these sealing stoppers for test tubes will not do damage to the bottles or test tubes in laboratory.
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