Description
| Catalogue No. | Pack Size | Corks Specifications |
| 19818/1 | Pack of 50 Pcs Solid
(RANGE 2 Corks) |
7 Pcs Each Size Bottom—8,9,11,13,15 |
| 3 Pcs Each Size Bottom—17,21,23,25,29 | ||
| 19818/2 | Pack of 50 Pcs One Hole
(RANGE 2 Corks) |
7 Pcs Each Size Bottom—8,9,11,13,15 |
| 3 Pcs Each Size Bottom—17,21,23,25,29 | ||
| 19818/3 | Pack of 50 Pcs Two Hole
(RANGE 2 Corks) |
10 Pcs Each Size Bottom—13,15,17,18 3 Pcs Each Size Bottom—21,23 |
| 2 Pcs Each Size Bottom—25,29 | ||
| 19818/4 | Pack of 58 Pcs Solid
(RANGE 2 Corks) |
8 Pcs Each Size Bottom—8,9,11,13,15,17 3 Pcs Each Size Bottom—21,23 |
| 2 Pcs Each Size Bottom—25,29 | ||
| 19818/5 | Pack of 67 Pcs Solid
(RANGE 2 Corks) |
9 Pcs Each Size Bottom—8,9,11,13,15,17 4 Pcs Each Size Bottom—21,23 |
| 2 Pcs Each Size Bottom—25,29 One Pc any Size Small | ||
| 19818/6 | Pack of 50 Pcs Solid
(RANGE 1 Corks) |
7 Pcs Each Size No.—0,1,2,3,4 |
| 3 Pcs Each Size No.—5,7,9,10,11 | ||
| 19818/7 | Pack of 50 Pcs One Hole
(RANGE 1 Corks) |
7 Pcs Each Size No.—0,1,2,3,4 |
| 3 Pcs Each Size No.—5,7,9,10,11 | ||
| 19818/8 | Pack of 50 Pcs Two Hole
(RANGE 1 Corks) |
10 Pcs Each Size No.—2,3,4,5 3 Pcs Each Size No.—7,9 |
| 2 Pcs Each Size No.—10,11 | ||
| 19818/9 | Pack of 58 Pcs Solid
(RANGE 1 Corks) |
8 Pcs Each Size No.—000,0,1,2,3,4 3 Pcs Each Size No.—7,9 |
| 2 Pcs Each Size No.—10,11 | ||
| 19818/10 | Pack of 67 Pcs Solid
(RANGE 1 Corks) |
9 Pcs Each Size No.—000,0,1,2,3,4 4 Pcs Each Size No.—7,9 |
| 2 Pcs Each Size No.—10,11 One Pc any Small Size
|
Assorted Rubber Corks are precision-molded stoppers made from high-quality natural rubber and designed for reliable sealing of laboratory glassware and containers. They provide an airtight, chemical-resistant closure essential for experiments, sample protection, and general laboratory operations. Suitable for research, analytical, and industrial environments where secure sealing is required.
Key Features
- Durable natural rubber construction with excellent flexibility and sealing performance
- Airtight fit for flasks, test tubes, bottles, and reaction vessels
- Good resistance to mild chemicals, acids, and laboratory reagents
- Smooth surface finish for easy insertion and removal
- Non-reactive, non-toxic, and safe for routine lab workflows
- Available in multiple shapes and sizes to suit diverse applications
Material Specifications
- Material: Natural rubber
- Properties: High elasticity and compressive strength. Good sealing capability at room temperature. Resistant to mild acids, bases, and aqueous solutions
- Temperature Range: Typically suitable up to ~70–80°C (not for high-heat applications)
- Standards: Manufactured under general laboratory quality and safety standards (ISO-compliant production environment)
Technical Specifications
- Sizes: Supplied in assorted standard laboratory sizes
- Dimensions: Tapered profiles compatible with common glassware openings
- Tolerance: Precision-moulded for consistent diameter and fit
- Colour Options: Natural rubber finish (varied tones as shown)
- Accessories: Supplied as assorted cork sets; no additional accessories required
Handling & Precautions
- Insert/remove using gentle pressure to avoid glassware breakage
- Clean with mild lab detergent; avoid harsh solvents that degrade rubber
- Not recommended for autoclaving or exposure to high temperatures
- Avoid prolonged contact with strong acids, organic solvents, and oils
- Store in a dry, cool environment away from direct sunlight to prevent ageing.
Applications
- General laboratory sealing of flasks, tubes, bottles, and sample containers
- Routine use in chemistry, biology, pharmaceutical, and analytical labs
- Ideal for QC/QA testing, academic research, biotechnology, and industrial R&D
- Useful for temporary sealing during reactions, storage, transport, and sample preparation
