Description

Stopper, 19/26 – Penny Head, Solid Cone – Borosilicate Glass – Eisco Labs

 

Solid cone stopper with penny head. Joint size 19/26. Made of high quality borosilicate glass. 2.25″ tall.
Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point -515°C | Annealing Point 565°C | Softening Point 820°C.