Rubber Stoppers, #1 to #3, Pk/12

All of our black rubber stoppers are laboratory grade. Each is marked on top with the size number for easy identification.

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.

Contents of this set...

1. (2 ea.) 1-hole #1 (NC-0923)
2. (2 ea.) 1-hole #2 (NC-0924)
3. (2 ea.) 1-hole #3 (NC-0925)
4. (2 ea.) Solid #1 (NC-0951)
5. (2 ea.) Solid #2 (NC-0957)

 Rubber Stopper Cross Reference Chart