Cork Manufacturer,Supplier and Exporter in India

Cork (Product Code: SCL299/049) is a size no. 0 plain rubber stopper used to close small tubes and narrow-mouthed vessels in school and college laboratories. It tapers from a 13 mm top diameter to a 9 mm bottom diameter, and although many labs call it a cork, the rubber grips glass more firmly than natural cork does. This rubber stopper for lab use in India is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.

Specifications

What Is the Rubber Cork Used For?

A small stopper like this closes a tube while its contents are shaken, for example when mixing oil, water and Sudan III for the emulsion test for fats, or when keeping a sample from evaporating or picking up dust between lessons. It is also used to seal small tubes in fermentation and respiration demonstrations, and to store small quantities of solutions or specimens in narrow vials. It is one of the basic items when planning a biology lab setup for a school.

Choose the stopper by the inside diameter of the vessel's mouth: with a 9 mm base and 13 mm top, it suits openings whose inner diameter falls between those two figures, ideally so that around a third to half of the stopper sits inside the neck. Twist it in gently rather than pushing hard. Where a glass tube or thermometer must pass through, a hole can be made with a cork borer; wet the glass with water or glycerine and protect your hand with a cloth when inserting it.

Supplier

Jain Scientific Equipments Private Limited, which trades as ScienceLab from Ambala, Haryana, India, supplies this rubber stopper as part of its range of laboratory accessories for schools, colleges and institutions. Buyers can combine stoppers with the tubes, flasks and other items they need on one quotation, which keeps purchasing for a whole lab simple. Our company profile has more information.

Related Laboratory Equipment

Items commonly ordered with small rubber stoppers:

• Test Tubes (With Rim) — measure their mouth against the 9 to 13 mm taper to check the fit.
• Cork Drills — bore a hole when a tube or thermometer must pass through.
• Rubber Cork — see this listing when you need other stopper sizes.
• Cork Stoppers — a natural-cork alternative for bottles and jars.

More accessories are listed under Biology Lab.

Frequently Asked Questions

Which openings does the size no. 0 Cork fit?
The size no. 0 Cork fits vessels whose inside mouth diameter lies between 9 mm and 13 mm, the two ends of its taper. Measure your tubes or vials before ordering, or send us the dimensions and we will advise on the fit.

Is this cork made of natural cork or rubber?
This Cork is made of rubber, not natural cork bark. In many laboratories the word cork is used for rubber stoppers, and rubber grips glass firmly and seals well when a tube is shaken or stored.

Does the rubber cork have a hole?
No, this rubber cork is a plain pattern stopper without a hole. You can bore it yourself with a cork borer when a glass tube or thermometer must pass through, or ask us on the contact page about other options.

Can the cork be used with organic solvents?
Chemical resistance is not stated for this cork, and many rubbers swell or soften in organic solvents. Ask us before using the rubber cork with solvents such as acetone or ether; it is routinely used with water-based solutions.

How many corks are in a pack?
Pack quantity for the size no. 0 cork is not listed, so tell us how many stoppers you need for your class or lab and we will quote accordingly, together with any tubes you are ordering at the same time.

Who supplies the Cork SCL299/049?
The Cork is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, which provides laboratory accessories to schools, colleges, dealers and importers in India and international markets. Send the code SCL299/049 with your quantity for a quotation.

How should rubber corks be stored?
Store rubber corks clean, dry and away from heat and direct sunlight, which make rubber harden and crack. Keeping them in a closed box also stops dust sticking to the stopper surface before it goes into a clean tube.

Request a Quote

Give code SCL299/049 and the quantity through our contact page, or add the stoppers to your enquiry cart with matching tubes.

Last updated: 24 September 2026