Rubber Cone Adapter for Vacuum Filtration Flask
From $7.90 (ex GST)
- Forms a tight, reliable seal between a Büchner funnel and vacuum filtration flask
- Conical rubber design accommodates slight size variations for a secure fit
- Helps maintain stable vacuum, reducing leaks and improving filtration speed
- Chemical resistant rubber suitable for routine aqueous solutions and general lab use
- Supports cleaner filtration by minimising movement between funnel and flask
- Ideal for Büchner filtration setups in laboratories, schools, and industrial QA/QC
- Description
Description
Rubber Cone Adapter for Vacuum Filtration Flask is designed to create a tight, cushioned seal between a Büchner funnel and a vacuum filtration flask, helping maintain strong vacuum integrity for faster, more consistent filtration. The tapered cone profile supports stable seating, reduces wobble during pouring and washing, and protects glass rims by minimising direct glass to glass contact. This improves safety and helps prevent bypass leakage that can slow filtration or destabilise vacuum performance during crystal recovery, precipitate collection, and routine solid liquid separation.
Manufactured from high quality lab grade rubber, the adapter compresses to accommodate minor tolerance variations between funnel stems and flask openings, delivering dependable sealing performance across common filtration setups. The resilient rubber body provides strong grip on glass, reduces slip risk, and supports repeatable assembly and disassembly in high use teaching and research environments. For best results, select the correct size for your funnel and flask neck, ensure contact surfaces are clean and dry, and use appropriate support stands to reduce tipping risk.
Standards and compliance context: ISO and ASTM standards for borosilicate glass such as ISO 3585 and ASTM E438 Type I apply to the Büchner flask and glass funnel, not to the rubber adapter itself. For the rubber cone adapter material and sealing performance, commonly referenced test methods include ISO 37 and ASTM D412 for tensile properties, ISO 7619-1 and ASTM D2240 for hardness, ISO 815-1 and ASTM D395 for compression set, and ISO 1817 and ASTM D471 for resistance to liquids. These standards support consistent material specification and quality verification when supplier test data is available.
Supplied by LabChoice Australia, this rubber cone adapter is an essential vacuum filtration accessory for Australian laboratories seeking reliable sealing, safer glassware handling, and repeatable filtration results.
| Item Code | Capacity for Flask | Pack |
| LC-18-RCA64001 | 250 ML/ 500 ML | 1 |
| LC-18-RCA64002 | 1L / 2L Flask | 1 |
| LC-18-RCA64003 | 5L Flask | 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