Rubber gum is made up mostly of a hydrocarbon polymer called polyisoprene, the chains of which are composed only of interlinked carbon atoms with some hydrogen atoms attached. |
The vibratory motion created by the shaft is amplified by the polyisoprene springs to which the tray is connected. |
All five feature a clear polypropylene barrel and plunger rod, and a polyisoprene plunger tip. |