Rubber Cork Stopper, Lab-Grade, High Quality & Reusable
From $0.35 (Ex GST)
- Flexible rubber ensures tight, leakproof sealing
- Lab-grade material resists chemicals and moisture
- Reusable for repeated sealing and experiment cycles
- Available in multiple sizes to fit common labware
- Used in teaching, research, and industrial settings
- Made from high-quality, durable lab-grade rubber
- Description
Description
Rubber cork stoppers provide a reliable, tight sealing solution for laboratory glassware that requires controlled containment of liquids, gases, or samples. Manufactured from high-density laboratory rubber, these stoppers meet the performance expectations outlined in ISO 4796 for general laboratory containers and align with the elastomer material durability principles referenced in ASTM D2000, which covers classification and quality requirements for rubber materials used in technical environments. This ensures each stopper offers predictable sealing behaviour, excellent elasticity, and long-term resistance to chemical exposure.
Designed with a precision-tapered profile, each stopper fits securely into flasks, test tubes, reagent bottles, and general laboratory vessels without slipping or deforming. The chemically resistant rubber maintains integrity when exposed to mild acids, alcohols, buffers, and routine laboratory reagents, supporting safe and repeated use in educational labs, research facilities, and industrial quality-control environments. The natural elasticity of the material allows the stopper to return to its shape after compression, ensuring consistent performance across multiple sealing cycles.
LabChoice Australia supplies these rubber cork stoppers with careful attention to dimensional accuracy and material quality so they perform reliably within laboratory workflows aligned to ISO and ASTM standards. Their durability makes them suitable for experiment setup, temporary closures, sample collection, and general teaching demonstrations where a simple, reusable, and non-reactive sealing option is required. With dependable sealing strength, long service life, and trusted material performance, these stoppers provide an efficient and practical closure solution for Australian laboratories supported by the quality assurance of LabChoice Australia.
| Item Code | Cork Number | Top(in MM) ±.2mm | Bottom(in MM) ±.2mm | Height(in MM) ±.2mm | Pack |
| LC-12-RCS5101 | 0 | 11 | 8 | 15.5 | 1 |
| LC-12-RCS5102 | 1 | 14 | 11 | 18.5 | 1 |
| LC-12-RCS5103 | 2 | 16.5 | 12 | 20 | 1 |
| LC-12-RCS5104 | 3 | 19 | 14 | 21 | 1 |
| LC-12-RCS5105 | 4 | 21 | 15 | 22 | 1 |
| LC-12-RCS5106 | 5 | 22.5 | 17 | 23 | 1 |
| LC-12-RCS5107 | 6 | 24.5 | 19 | 26 | 1 |
| LC-12-RCS5108 | 7 | 26 | 20 | 28 | 1 |
| LC-12-RCS5109 | 8 | 26.5 | 21 | 27.5 | 1 |
| LC-12-RCS5110 | 9 | 28 | 21.5 | 31 | 1 |
| LC-12-RCS5111 | 10 | 30 | 25 | 33 | 1 |
| LC-12-RCS5112 | 11 | 33 | 28 | 33 | 1 |
| LC-12-RCS5113 | 12 | 34.5 | 30 | 34.5 | 1 |
| LC-12-RCS5114 | 13 | 38.5 | 31 | 37 | 1 |
| LC-12-RCS5115 | 14 | 41.5 | 32 | 45.5 | 1 |
| LC-12-RCS5116 | 15 | 42 | 37 | 40.5 | 1 |
| LC-12-RCS5117 | 16 | 45 | 35 | 36.5 | 1 |
| LC-12-RCS5118 | 17 | 49.5 | 40 | 40.5 | 1 |
| LC-12-RCS5119 | 18 | 53.5 | 48 | 33.5 | 1 |
| LC-12-RCS5120 | 19 | 58 | 44 | 45 | 1 |
| LC-12-RCS5121 | 20 | 60 | 51 | 56.5 | 1 |
| LC-12-RCS5122 | 21 | 60 | 47.5 | 45 | 1 |
| LC-12-RCS5123 | 22 | 62 | 50 | 44 | 1 |
| LC-12-RCS5124 | 23 | 75 | 62 | 45 | 1 |
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Our Reviews
⭐⭐⭐⭐⭐
We ordered a set of customised BORO 3.3 borosilicate glassware for our teaching labs, and LabChoice Australia exceeded every expectation. From the first consultation to final delivery, their team listened carefully, offered expert advice, and ensured every piece matched our specifications perfectly.
The clarity and precision of the glassware are exceptional, and the quick turnaround made setup effortless. It’s refreshing to work with an Australian supplier who genuinely understands laboratory needs and takes pride in quality craftsmanship. We’ll definitely be returning to LabChoice for future glassware requirements
⭐⭐⭐⭐⭐
Our lab required high-precision BORO 3.3 glassware for analytical testing, and LabChoice Australia delivered outstanding results. The ordering process was simple, communication was clear, and every beaker and flask arrived perfectly calibrated and ready for use.
The quality of the glass is exceptional — resistant to heat, easy to clean, and consistently accurate in measurement. It’s reassuring to know there’s an Australian supplier that combines scientific precision with genuine customer care. I’d recommend LabChoice to any research team looking for dependable labware
⭐⭐⭐⭐⭐
We needed a set of customised borosilicate glassware for a specialised project, and LabChoice Australia delivered exactly what we envisioned. The team worked closely with us from design to production, ensuring every detail met our specifications. The craftsmanship is exceptional, and the turnaround time was impressive. It’s reassuring to know we can rely on them for unique, made-to-order pieces
⭐⭐⭐⭐⭐
LabChoice Australia has completely changed the way we source our lab glassware. The quality is consistently top-notch, and every piece meets the precision we need for reliable results. Their team knows their stuff, answers our questions quickly, and always goes the extra mile to help — they’re more like partners than just a supplier.
⭐⭐⭐⭐⭐
We trust LabChoice Australia because they deliver every time. Their borosilicate glassware is durable, accurate, and perfect for the high-heat work we do. Everything arrives well-packed with clear specs, so there are never surprises. It’s reassuring to deal with a supplier who understands both compliance and the demands of a busy lab