Hollow glass stoppers made from borosilicate glass for laboratory flasks and bottles.
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Hollow Stoppers, High Quality Borosilicate Glass (BORO 3.3), Heavy Quality

From $2.10 (ex GST)
Penny head ground glass stopper made from borosilicate glass for laboratory glassware sealing.
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Penny Head Ground Glass Stopper, High Quality Borosilicate Glass

From $2.00 (ex GST)
Rubber cork stopper for laboratory glassware, providing secure sealing.
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Rubber Cork Stopper, Lab-Grade, High Quality & Reusable

From $0.35 (ex GST)

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Stoppers and closures from LabChoice Australia are designed to provide reliable sealing for laboratory glassware and plasticware used in teaching, research and industrial environments. This category includes rubber stoppers, glass stoppers, hollow stoppers, septa, screw caps, PE stoppers and specialised closures engineered to maintain secure containment of liquids, vapours and reagents during storage, heating, transport and experimental procedures. Each stopper or closure is selected to offer dependable chemical resistance, structural stability and long service life.

Glass stoppers supplied by LabChoice Australia are manufactured from BORO 3.3 borosilicate glass that complies with ISO 3585 and ASTM E438 Type 1 Class A specifications. Precision ground tapers ensure smooth insertion, tight fit and leak resistant sealing when used with compatible glassware. These stoppers provide excellent chemical durability and are ideal for high purity applications, distillation assemblies, reagent storage and controlled reactions that require clean, inert contact surfaces.

Rubber and polymer based stoppers offer flexible sealing options suited to general laboratory work. Materials such as natural rubber, silicone and neoprene provide firm grip, chemical resistance and resilience under repeated compression. Polypropylene and PE closures deliver lightweight, corrosion resistant alternatives for reagent bottles, wash bottles, storage containers and educational laboratory setups. Polypropylene aligns with USP Class VI and ISO 10993 safety testing frameworks, and it naturally conforms to RoHS requirements due to the absence of restricted heavy metals.

Specialised closures such as septa, vacuum stoppers, hollow stoppers and threaded caps are engineered to support analytical workflows, reduced pressure applications and solvent handling. These components are tested for sealing capability, structural strength and dimensional accuracy under ISO 9001 aligned quality control systems. Vacuum capable stoppers undergo pressure retention checks using gauges calibrated to recognised metrology standards.

Each stopper and closure is inspected for clarity, surface finish, fitment accuracy and mechanical integrity before packing. Designed for chemistry teaching laboratories, university research departments, industrial QC facilities and scientific workplaces, LabChoice Australia stoppers and closures provide secure, dependable sealing backed by certified material compliance and consistent quality validation.