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Hollow Stopper, Hexagonal - 12/21 Cone - Round End - Borosilicate Glass - Eisco Labs

SKU CH0872G
Original price $8.99 - Original price $8.99
Original price
$8.99
$8.99 - $8.99
Current price $8.99
  • Hollow stopper made of high quality, heavy duty, 3.3 borosilicate glass
  • Hexagonal top and Round End
  • 12/21 cone size
  • Perfect for any science or home laboratory
In Stock - Over 100 Available
Expected to Ship Today
Original price $8.99 - Original price $8.99
Original price
$8.99
$8.99 - $8.99
Current price $8.99
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Some items have built-in volume discounts, but if you'd like a quote, call us or click below. You may get a better deal than the rates listed here!
Large or special order? Call (585) 360-2295 or

Hollow stopper made of high quality, 3.3 borosilicate glass. Stopper features a hexagonal shaped top and a round end. 12/21 cone size.

Stopper measures 1.55" in total length. Top measures 0.6" long and wide.
Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point -515°C | Annealing Point 565°C | Softening Point 820°C.