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Open Hours: M-F 9 am-5:30 pm Saturday 10am-2pm MST (-7GMT) 95 Lincoln St. Denver CO 80203-3922
Top: 1-1/4" (32mm) Bottom: 1-1/32" (26mm) Length: 1.0" (25mm)
See our Rubber Stopper Size Chart.
All of our black rubber stoppers are laboratory grade.
These rubber stoppers contain a high percentage of pure rubber and are low in free sulfur. The stopper composition ensures resiliency and pliability over a long period and will withstand laboratory conditions without hardening.
The upper working temperature of these black rubber stoppers is 212°F.
Fits these Flasks:
250ml Pyrex Erlenmeyer Flask 250ml Bomex Erlenmeyer Flask 500ml Bomex Erlenmeyer Flask 250ml Bomex Florence Flask 500ml Bomex Florence Flask