1 Pair Rubber Cork 25mm for Boiling Tube

Rubber Cork 25mm for Boiling Tube is a solid rubber stopper set made for test tubes and boiling tubes used in everyday laboratory work. Each pack is sold as 1 pair, which means you receive 2 pieces. The rubber is soft, easy to fit and built to stay useful through repeated use.

Made in Bangladesh and available in black or grey, this cork is a practical choice for school labs, college practicals and testing rooms. It also works with conical flasks and glass bottles. Explore more essentials in our scientific tools category at Nexus Lab Scientific Co. (Nexus Lab BD).

Why Choose This Rubber Cork 25mm for Boiling Tube for Your Lab

A boiling tube needs a stopper that closes the opening firmly and comes out without a struggle. This Rubber Cork 25mm for Boiling Tube is made from solid rubber, so it keeps its shape and grips the glass wall well.

Because the rubber is soft, it slides in with modest hand pressure. Gentle insertion places less stress on the glass rim, which is useful when students are handling tubes for the first time.

A pair also makes practical sense. One cork can stay on the working tube while the second is ready for another sample, a spare tube or a small bottle. Labs that run two tests side by side will find this handy.

Build Quality of the Rubber Cork 25mm for Boiling Tube

The cork measures 27mm x 24mm with a standard 25mm length, a size that suits conventional boiling tubes and many common test tubes. When matched correctly to the tube mouth, the Rubber Cork 25mm for Boiling Tube gives a snug, reliable fit.

Its solid design keeps things simple. There is nothing to assemble and nothing to replace, only a plain rubber closure that does its job every time you cap a tube.

Long-lasting rubber matters in a busy lab. Corks are pressed in and pulled out many times a day, and a soft, durable body handles that routine without early wear.

Key Features of Rubber Cork 25mm for Boiling Tube

• Solid rubber cork for boiling tubes and test tubes
• Sold as 1 pair (2 pieces per pack)
• Size 27mm x 24mm with a standard 25mm length
• Soft, long-lasting rubber that is easy to use
• Available in black or grey
• Made in Bangladesh
• Also suitable for conical flasks and glass bottles
• Compact and easy to store

Applications of Rubber Cork 25mm for Boiling Tube

• Sealing boiling tubes in school and college experiments
• Stoppering conventional test tubes
• Capping conical flasks during practical work
• Closing glass bottles in the lab
• Chemistry and science practical classes
• Sample handling in testing laboratories
• Educational science kits and demonstrations

Benefits of Rubber Cork 25mm for Boiling Tube

Secure Fit
The 27mm x 24mm body sits firmly in a matching tube mouth, keeping the closure steady while you work.

Soft and Easy to Handle
Soft rubber goes in and comes out with little effort, which makes repeated use less tiring.

Long-Lasting Rubber
The durable material is made for daily lab routines, so one pair serves for a long time.

Two Pieces in One Pack
A pair gives you a working cork and a ready spare in a single purchase.

Works With More Than One Container
Boiling tubes, conical flasks and glass bottles can all use the same style of cork.

Locally Made and Easy to Restock
Because it is a Bangladesh-made product, replacing worn corks is simple for schools and labs.

Buying Guide for Rubber Cork 25mm for Boiling Tube

Start by measuring the inside diameter of the mouth of your tube, flask or bottle. Compare that measurement with the 27mm x 24mm size of this cork to confirm it suits your glassware.

A good stopper should sit snugly without needing force. If you use several tube sizes in your lab, check each mouth before you order so every container gets the right cork.

Also think about quantity. Each pack holds 2 pieces, so busy labs and classrooms may prefer to order several pairs at once to keep spares on hand.

Technical Specifications – Rubber Cork 25mm for Boiling Tube

About Nexus Lab Scientific Co. (Nexus Lab BD)

Nexus Lab Scientific Co. (Nexus Lab BD) is a laboratory equipment supplier offering lab instruments, glassware and everyday lab essentials for schools, colleges and testing labs. The goal is simple: to give customers a dependable place to find the tools their work needs. From basic consumables like rubber corks to specialised instruments, Nexus Lab Scientific Co. (Nexus Lab BD) aims to make lab shopping easy and clear.