High-quality stopper borers made from carbon steel with sharp, durable cutting edges. Suitable for boring holes in rubber stoppers and cork stoppers — an essential laboratory tool.
Specifications are subject to confirmation with your enquiry.
Request a Quote📐 Features:
High-Quality Carbon Steel · Sharp Cutting Edge · 3~16mm Sizes · For Rubber/Cork Stoppers
| Bore Diameter (mm) | Outer Diameter (mm) | Length (mm) |
|---|---|---|
| 3 | 6 | 80 |
| 4 | 7 | 80 |
| 5 | 8 | 80 |
| 6 | 9 | 80 |
| 7 | 10 | 80 |
| 8 | 11 | 80 |
| 9 | 12 | 85 |
| 10 | 13 | 85 |
| 11 | 14 | 85 |
| 12 | 15 | 85 |
| 14 | 17 | 90 |
| 16 | 19 | 90 |
The stopper borer is an essential laboratory tool used to create holes in rubber or cork stoppers. Made from high-quality carbon steel with precision-ground cutting edges for sharpness and durability.
Available in 3~16mm diameter sizes to accommodate various glass tubing diameters.
🔬 Key Advantages:
Sharp & Durable — Precision cutting edges for easy boring
Quality Steel — Sturdy, resists deformation
Multiple Sizes — 3~16mm range
Simple Operation — Standard lab tool
Creating holes in stoppers for glass tubing
Preparing stoppers for distillation apparatus
Bored stoppers for gas delivery tubing
Basic chemistry lab apparatus assembly
| Glass Tubing OD (mm) | Recommended Borer Size (mm) |
|---|---|
| 3~4 | 4~5 |
| 5~6 | 6~7 |
| 7~8 | 8~9 |
| 9~10 | 10~11 |
| 11~12 | 12~14 |
💡 Tip: Choose a borer diameter slightly larger than the glass tubing (about 0.5~1mm) to ensure smooth passage while maintaining a good seal.
⚠️ Safety Notes
Contact our team for pricing and inventory. Custom sizes and bulk orders available.