Hollow glass stoppers made from borosilicate glass for laboratory flasks and bottles.
Hollow glass stoppers made from borosilicate glass for laboratory flasks and bottles.
Penny head ground glass stopper made from borosilicate glass for laboratory glassware sealing. Penny Head Ground Glass Stopper, High Quality Borosilicate Glass, Heavy Quality

Hollow Stoppers, High Quality Borosilicate Glass (BORO 3.3), Heavy Quality

Price range: $2.10 through $12.50

  • Lightweight hollow design reduces joint stress 
  • Precision-ground for airtight, leak-resistant sealing 
  • Durable and reusable for long-term use 
  • Ideal for flasks, condensers, and jointed glassware 
  • Used in chemistry, pharmaceutical, and academic labs 
  • Made from LabChoice BORO 3.3 glass – High quality

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SKU: LC-12-HS5000 Categories: ,
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Description

Hollow stoppers are designed to provide a secure seal for glassware joints while minimizing weight and pressure on delicate apparatus. Their ground-glass taper ensures a tight, leakproof fit across standard joint systems. 

The lightweight design reduces the risk of joint cracking, especially in vertical or suspended setups, making these stoppers ideal for distillation columns, condensers, and reaction flasks. They are reusable and autoclavable, offering long-term value for laboratory operations. 

Manufactured from heavy-duty LabChoice BORO 3.3 borosilicate glass, they deliver excellent thermal and chemical resistance. Supplied by LabChoice Australia, these stoppers are a dependable solution for sealing precision labware in both research and industrial environments 

Item Code N S Pack
LC-12-HS5001 10/19 1
LC-12-HS5002 14/23 1
LC-12-HS5003 19/26 1
LC-12-HS5004 24/29 1
LC-12-HS5005 29/32 1
LC-12-HS5006 34/35 1
LC-12-HS5007 45/ 40 1

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Our Reviews

Sarah Nguyen

1 week ago

⭐⭐⭐⭐☆

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

Dr. Emily Hart – Senior Research Scientist

3 weeks ago

⭐⭐⭐⭐⭐

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.

Mark Stevens

3 weeks ago

⭐⭐⭐⭐☆

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