Corks Manufacturer,Supplier and Exporter in India

Corks (Product Code: SCL-583/041) are brown wooden corks in size 3, used in the laboratory to close tubes, flasks and bottles whose mouths match that size, and, once bored, to hold thermometers, glass tubing and delivery tubes in assembled apparatus. They are an everyday companion to chemistry lab glassware in school and college practical rooms, where closures are constantly lost, worn or bored for new set-ups. The corks are supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.

Specifications

Typical Use

To pass a thermometer or glass tube through a cork, bore a hole with a cork borer slightly smaller than the tube, working from the narrow end with a steady twisting action. Wet the glass with water or a little glycerine, protect your hand with a cloth, and push the tube in with a gentle twisting movement while gripping it close to the cork, never by the far end. A cork that is rolled lightly under the palm on the bench before use becomes a little softer and seals the mouth of the vessel better.

In a simple gas collection apparatus, a bored cork holds the delivery tube firmly in the neck of a flask or boiling tube so the gas is led to the collecting jar. Wooden corks can char if they are held close to a flame and can absorb some liquids, so replace any cork that is charred, cracked or stained. Where a tighter, airtight seal is required, a rubber cork of matching size is the better choice.

Supplier

ScienceLab is the name under which Jain Scientific Equipments Private Limited of Ambala, Haryana, supplies laboratory consumables such as these corks. For vendor registration, its GSTIN is 06AAECJ8618A1ZT, and it exports to international markets under Importer-Exporter Code AAECJ8618A from the DGFT, while also serving institutions across India. Read the company profile.

Related Chemistry Lab Equipment

Tools and glassware that are used with corks when setting up apparatus:

• Cork Drills — for boring holes to take glass tubing or a thermometer.
• Cork Borer Sharpener — keeps borers sharp so holes come out clean.
• Boiling Tubes — a common vessel closed or fitted with a cork.
• Hollow Glass Tubes Ordinary — tubing passed through bored corks to build delivery tubes.
• Rubber Cork — the alternative where an airtight seal is needed.

Find more closures and glassware in the Chemistry Lab category.

Frequently Asked Questions

What size are these corks?
Size 3. To be sure of the fit, share the inside mouth diameter of your tubes or flasks through our contact page and we will check it for you.

What are they made of?
Wood, brown in colour.

Can holes be bored in them?
Yes. Use a sharp cork borer slightly smaller than the tube or thermometer to be fitted.

Should I choose cork or rubber?
Cork suits general closures and apparatus assembly; rubber gives a tighter, airtight seal and is preferred for vacuum or gas-tight set-ups.

Are other sizes available?
Tell us the sizes you need and we will confirm what we can supply with your quotation.

Can you supply corks in bulk or for export?
Yes. Give the quantity and delivery location; we supply schools, colleges and dealers in India and international markets.

Request a Quote

Send the quantity of Corks (SCL-583/041) you need through the contact page, or add them to the enquiry cart with cork borers and glass tubing for your practical set-ups.

Last updated: 24 September 2026