Rubber Stopper Manufacturer,Supplier and Exporter in India
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Product Code : EL-CL-11687
Jlab Export is a leading Rubber Stopper Manufacturer,and suppliers in India
Rubber Stopper (code EL-CL-11687) is a No. 3 chemical-resistant rubber stopper with two holes, model JL 108/32.1, measuring 19.0 mm at the top, 14.0 mm at the bottom and 21.0 mm in height. The pair of holes lets one stopper carry two glass fittings at once. It is produced by JLab in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Model No. | JL 108/32.1 |
| Size | No. 3 |
| Holes | Two |
| Top diameter | 19.0 mm |
| Bottom diameter | 14.0 mm |
| Height | 21.0 mm |
| Material | Rubber, chemical resistant |
| Quality check | Each rubber 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-CL-11687 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What the Two Holes Are For
In a classic gas preparation, a thistle funnel goes through one hole so acid can be added, while a delivery tube in the other carries the gas away. The same stopper can hold a thermometer beside a short vent tube, or an inlet and an outlet for bubbling gas through a liquid. Keep the funnel stem below the liquid surface so gas cannot escape up it.
Fittings for the No. 3
- Thistle Funnel — borosilicate funnel for adding acid through one hole.
- Delivery Tube — clear glass tube to lead the gas off.
- Rubber Stopper — two-hole No. 4, one size up.
Find matching glassware in Chemistry Lab under Chemistry Lab Equipment.
Request a Quote
Add the stoppers via Add To Cart or ask on the contact page, quoting size No. 3, the number required and the delivery address.
Last updated: 25 October 2026
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