Rubber Cork is a premium-quality laboratory accessory designed to provide a secure, leak-resistant seal for a wide variety of laboratory glassware including test tubes, boiling tubes, flasks, and other experimental apparatus. Manufactured from durable laboratory-grade natural rubber, it offers excellent elasticity, chemical resistance, and long-lasting performance for routine laboratory applications.
Available in solid (without holes), one-hole, and two-hole designs, Rubber Corks accommodate laboratory tubing, thermometers, delivery tubes, condensers, and other accessories used in chemistry, biology, and physics experiments. The accurately molded construction ensures a tight fit, minimizing leakage while providing reliable support for inserted laboratory equipment.
Multiple sizes are available to suit different laboratory vessels, including No. 2, No. 7, and No. 13, making them suitable for test tubes, boiling tubes, and 250 ml flasks. Their reusable design makes them an economical and practical choice for educational institutions and research laboratories.
Supplied by Edulabs, the Rubber Cork is carefully selected to meet the requirements of modern laboratories across Tanzania and East Africa, delivering dependable quality, secure sealing performance, and long service life.
Key Features
- Manufactured from premium laboratory-grade natural rubber
- Excellent flexibility and elasticity
- Leak-resistant sealing performance
- Available in solid, one-hole, and two-hole designs
- Suitable for laboratory tubing and thermometers
- Excellent chemical resistance
- Durable and reusable construction
- Easy to insert and remove
- Long service life
- Suitable for chemistry, biology, and physics laboratories
- Quality-tested for dependable laboratory performance
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Rubber Cork |
| Material | Laboratory Grade Natural Rubber |
| Product Type | Laboratory Rubberware |
| Available Sizes | No. 2, No. 7, No. 13 |
| Configurations | Solid, One Hole & Two Holes |
| Reusable | Yes |
| Chemical Resistance | Excellent |
| Application | Sealing Laboratory Glassware |
| Grade | Laboratory Grade |
| Country of Origin | Africa |
Available Model & Pack Size
| Model | Specification | Pack Size |
|---|---|---|
| Rubber Cork | No. 2, Without Hole (For Test Tubes) | Pack of 100 |
| Rubber Cork | No. 13, Without Hole (For 250 ml Flask) | Pack of 100 |
| Rubber Cork | No. 2, One Hole (For Test Tubes) | Pack of 100 |
| Rubber Cork | No. 7, One Hole (For 24 mm Boiling Tubes) | Pack of 100 |
| Rubber Cork | No. 13, Two Holes (For Test Tubes) | Pack of 100 |
| Rubber Cork | No. 2, Two Holes (For Test Tubes) | Pack of 100 |
| Rubber Cork | No. 7, Two Holes (For 24 mm Boiling Tubes) | Pack of 100 |
| Rubber Cork | No. 13, Two Holes (For 250 ml Flask) | Pack of 100 |
Note: Additional laboratory rubberware, silicone stoppers, tubing, adapters, and laboratory accessories are available upon request. Contact Edulabs for bulk orders and customized laboratory supply solutions.
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