Penny Head Ground Glass Stopper, High Quality Borosilicate Glass
From $2.00 (ex GST)
- Penny head shape allows easy handling and grip
- Ground glass taper ensures airtight sealing
- Heavy quality glass for durability and lab safety
- Used in reagent bottles, flasks, and tubing ports
- Ideal for chemical storage and sample protection
- Made from LabChoice BORO 3.3 glass – High quality
- Description
Description
Penny head ground glass stoppers are precision-made sealing components designed for laboratories that require accurate, airtight closure across a wide range of glassware. Manufactured from premium BORO 3.3 glass, each stopper conforms to ISO 383 for interchangeable ground joints and aligns with the chemical and thermal performance standards defined in ASTM E438 Type I, Class A. This ensures a reliable taper fit, high chemical durability, and excellent resistance to temperature variation, making these stoppers suitable for demanding laboratory applications.
The wide penny-style head improves handling and grip during insertion or removal, especially when technicians are wearing gloves or when glassware is wet. Each stopper is ground to a precise taper that maintains consistent sealing performance, helping researchers prevent evaporation, protect sensitive samples, and maintain controlled conditions inside flasks or reaction vessels. The inert BORO 3.3 composition ensures no interference with stored chemicals, enabling clean, contamination-free compatibility with acids, solvents, and general reagents used in analytical, educational, and industrial labs.
LabChoice Australia supplies these stoppers with carefully controlled tolerances that mirror ISO and ASTM requirements, ensuring full interchangeability with standard laboratory flasks, bottles, adapters, and reaction apparatus. Their mechanical strength and thermal stability allow routine heating and cooling without compromising seal integrity. With dependable performance, long service life, and compliance with international standards, these penny head stoppers provide Australian laboratories with a trusted closure solution supported by the quality assurance of LabChoice Australia.
| Item Code | N S | Pack |
| LC-12-PH4901 | 10/19 | 1 |
| LC-12-PH4902 | 14/23 | 1 |
| LC-12-PH4903 | 19/26 | 1 |
| LC-12-PH4904 | 24/29 | 1 |
| LC-12-PH4905 | 29/32 | 1 |
| LC-12-PH4906 | 34/35 | 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