Cork Flask Support Rings 5 Pack

Cork Flask Support Rings – 5 Pack provide a cushioned base for compatible round-bottom and other laboratory flasks when placed on a flat work surface. Available size variants are 80 mm, 100 mm, 120 mm, and 150 mm.

The cork ring helps keep rounded glassware from rolling while reducing direct contact between the flask and a hard benchtop. Select a ring diameter that supports the vessel securely without concentrating excessive force on a small area of the glass.

These laboratory flask support rings are intended as benchtop supports, not as clamps or load-rated structural supports. They do not replace appropriate stands, clamps, heating mantles, or other equipment required for an active laboratory setup.

Inspect both the cork ring and glassware before use. Replace rings that are cracked, heavily contaminated, charred, chemically degraded, or otherwise damaged. Cork is combustible; keep support rings away from open flame and surfaces hot enough to ignite or degrade the material.

When supporting glassware containing hazardous chemicals, hot liquids, or valuable samples, consider secondary containment and the stability of the complete setup. The current product information does not document chemical-resistance, temperature, or load ratings for the cork rings.

Browse our borosilicate laboratory flasks for related glassware.

Related Products

English 4 Finger Cork Lab Clamp with Rod · English Clamp with Cork. Choose supports appropriate to the flask size and operating conditions.

Frequently Asked Questions

What sizes are available?
The current listing offers 80 mm, 100 mm, 120 mm, and 150 mm size variants in a five-pack. Select the variant suited to your vessel.

Can a cork ring replace a stand and clamp?
No. These rings are benchtop supports and do not replace structural support hardware required by an active apparatus.

Can I place a ring near a flame or hot surface?
Cork is combustible. Keep rings away from open flames and surfaces hot enough to ignite or degrade them.