Rubber Stopper Manufacturer,Supplier and Exporter in India
Product Code : EL-CE-8484
Jlab Export is a leading Rubber Stopper Manufacturer,and suppliers in India
Rubber Stopper (code EL-CE-8484) is a tapered one-hole rubber stopper that closes flasks, test tubes and bottles while letting a glass tube, thermometer or delivery tube pass through, made in four sizes from 12 to 21.3 mm across the bottom. Labs usually keep several sizes on hand for different set-ups. JLab makes it in Ambala, India, to go with its glassware.
Specifications
| Parameter | Detail |
|---|---|
| Type | Rubber stopper with 1 hole |
| Size A (bottom x top x length) | 15 x 18 x 24 mm |
| Size B (bottom x top x length) | 12 x 17.5 x 25.7 mm |
| Size C (bottom x top x length) | 21.3 x 25.5 x 24.7 mm |
| Size D (bottom x top x length) | 21 x 26.5 x 27.5 mm |
| Material | Rubber |
| Quality check | Each stopper is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 50 units |
| Dispatch time | Usually 3–5 working days |
| Product code | EL-CE-8484 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Rubber Stopper Used For?
Chemistry and biology practicals use one-hole stoppers to fit delivery tubes for gas preparation, to hold thermometers in boiling tubes and distillation flasks, and to close wash bottles and fermentation set-ups. Wet the glass tube with water or glycerine and twist it gently into the hole, protecting the hand with a cloth, rather than forcing it. Wash stoppers after use and keep them away from oils and strong solvents.
What to Specify When Ordering
- Size, as bottom x top x length: 15 x 18 x 24 mm, 12 x 17.5 x 25.7 mm, 21.3 x 25.5 x 24.7 mm or 21 x 26.5 x 27.5 mm.
- Quantity of each size required.
Frequently Asked Questions
How do I pick the right size?
Measure the inside of the vessel neck: the bottom diameter should slip in and the top diameter should be wider than the opening, so the stopper seats firmly part-way.
What fits through the hole?
A glass or delivery tube, a thermometer or a dropper stem, depending on the bore needed for the set-up.
Is a two-hole version offered?
Yes. The 2 Hole Rubber Stopper takes two tubes at once, as in a wash bottle or a gas jar fitted with a thistle funnel and delivery tube.
Who makes the Rubber Stopper?
Jain Laboratory Instruments Pvt Ltd (JLab) makes it in Ambala, Haryana, and sells it in quantity alongside flasks, test tubes and glass tubing.
OEM Manufacturer
The stoppers are made by Jain Laboratory Instruments Pvt Ltd, which trades as JLab and was incorporated in 2017 at Hargolal Road, Ambala, Haryana. It manufactures rubber goods such as these alongside its glassware and apparatus, so a school can stock a whole practical on one quotation. JLab exports worldwide, for example to Sudan in North Africa, Bahrain in the Middle East, Myanmar in Southeast Asia and Ireland in Northern Europe.
Related Stoppers and Corks
- 2 Hole Rubber Stopper — two-hole version for two tubes in one neck.
- Solid Rubber Stopper — stopper without a bore for sealing vessels.
- Rubber Corks / Rubber Stopper — general rubber corks for laboratory vessels.
- Cork Borer — bores extra holes in rubber stoppers and corks.
More bench items are in Chemistry Equipment, part of Chemistry Lab Equipment.
Request a Quote
Add the sizes you need via Add To Cart or write through the contact page with quantities per size and the delivery location.
Last updated: 25 October 2026
