Rubber Stoppers, #7 to #9, Pk/6

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. (1 ea.) Solid #7 (NC-0962)
2. (1 ea.) 1-hole #7 (NC-0929)
3. (1 ea.) Solid #8 (NC-0963)
4. (1 ea.) 1-hole #8 (NC-0930)
5. (1 ea.) Solid# 9 (NC-0964)
6. (1 ea.) 1-hole #9 (NC-0931)