Silicone Rubber Plug is good resistance to chemicals, acid resistant, alkali resistant, corrosion-resistant, high temperature resistant.
 
There is double hole in the center of the plug for inserting a glass tube, very convenient for meeting your needs. can be useds to seal bottles flasks in the laboratory or home, etc.
 
Conical design, solids, easy to install and good sealing performance, flexible and durables, not easy to crack, shrink, harden or break.
 
Material: Silicone
 
The tapered plug is in size : 4# / 5# / 6# / 7# / 8# / 9# / 10# / 11# / 12#
 
Packing list:1 * Silicone Rubber Stoppers
 
 
Please note:
1. The size is manually measured, there may be a deviation 1-2mm.
2. Due to the screen display and indoor light, color deviation may occur.
 
 
Please check the size carefully before ordering!