Rubber stoppers with holes of different diameters Manufacturer,Supplier and Exporter in India

Rubber stoppers with holes of different diameters (Product Code: SCI-495/023) are round, one-hole rubber stoppers used to close test tubes and flasks while a glass tube or thermometer passes through them in laboratory set-ups. Teachers and lab assistants use them when apparatus must be sealed yet connected, choosing from bottom diameters of 11 mm, 13 mm, 14 mm and 15 mm. They are supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, to schools and colleges sourcing rubber stoppers for lab use across India.

Specifications

What Are One-Hole Rubber Stoppers Used For?

A single bore turns a simple closure into a connection point. In gas preparation, the stopper closes a boiling tube or flask while a delivery tube carries the gas to a gas jar or into lime water. In heating and cooling experiments, it holds a thermometer at a fixed depth in a test tube, and in simple wash bottles it anchors a bent glass tube — everyday tasks on school chemistry lab equipment lists in India.

Choose the size so that the stopper enters the neck partway and sits firmly without being pushed fully inside. Remove glass tubes after the practical so the rubber does not grip them permanently, and keep stoppers away from direct flame. Storing them in a closed box, out of sunlight, helps the rubber stay flexible.

What to Specify When Ordering

• The bottom diameter(s) needed: 11 mm, 13 mm, 14 mm or 15 mm.
• The quantity of each size, per bench or per laboratory.
• The glassware the stoppers will close, so each size can be checked against its neck.
• Whether solid stoppers without holes should be quoted on the same enquiry.

Supplier

ScienceLab is the trading name of Jain Scientific Equipments Private Limited, and the company supplies these one-hole rubber stoppers from Ambala, Haryana, as part of its laboratory consumables range for schools, colleges, dealers and importers in India and international markets. Because stoppers are usually bought together with glassware and tubing, one enquiry can cover the whole bench list. Read more about the company on the ScienceLab company profile.

Related Laboratory Equipment

A one-hole stopper is only one part of a gas-delivery or thermometer set-up; these items complete it:

• Rubber Stoppers without Holes Of Different Diameters — solid closures for tubes that only need sealing.
• Glass Pipes of Different Diameters — glass tubing to pass through the stopper's hole.
• Rubber Tube (Laboratory) — a flexible link from the glass tube to the next piece of apparatus.
• Cork Drills — steel borers for making holes in corks and stoppers.

Browse more closures, glassware and bench accessories in the Laboratory Equipment category.

Frequently Asked Questions

What sizes do the Rubber stoppers with holes of different diameters come in?
The Rubber stoppers with holes of different diameters are listed in bottom diameters of 11 mm, 13 mm, 14 mm and 15 mm. The bottom diameter is the end that enters the glassware, so compare it with the inner neck of your tube or flask before ordering.

How many holes does each stopper have?
Each of the Rubber stoppers with holes of different diameters has one hole, which takes a single glass tube, thermometer or dropper. If your apparatus needs a closure with no opening at all, choose the matching Rubber Stoppers without Holes Of Different Diameters instead.

Are these rubber stoppers chemical resistant?
Yes. The Rubber stoppers with holes of different diameters are described as chemical resistant, which suits routine school and college chemistry. For strong solvents or unusual reagents, send the chemical names through our contact page and we will advise on suitability before you order.

How do I fit a glass tube into the stopper safely?
To fit a glass tube into Rubber stoppers with holes of different diameters, wet the tube with water or a little glycerine, wrap it in a cloth, grip it close to the stopper and push with a gentle twist. Never force it, as the glass can snap.

Who supplies the Rubber stoppers with holes of different diameters?
Jain Scientific Equipments Pvt Ltd (ScienceLab), based in Ambala, Haryana, India, supplies the Rubber stoppers with holes of different diameters. The company sources them for schools, colleges, laboratories, dealers and importers, and can quote them together with the glassware and tubing used alongside them.

What should a quotation request include?
A quotation request for Rubber stoppers with holes of different diameters should list each bottom diameter required (11, 13, 14 or 15 mm), the quantity of each size and your delivery location. Bulk orders for India and international markets are quoted on request.

Request a Quote

To request a quote for Rubber stoppers with holes of different diameters, send the sizes and quantities through the contact page, or add the item to the enquiry cart along with the rest of your laboratory list.

Last updated: 24 September 2026