1.Name:molded rubber plug 2.Material:Rubber 3.Size/color:various 4.Competitive price 5 ... gas permeability.2), strong resistance to water vapor permeability.3), high resistance to chemicals sex.4), high heat ... manufacture of making all kinds of Hot-sell Rubber plug, we have our own team of researching, developing ... ResistanceBAAANotes:1. A=Excellent, B=Good, C=Fair, D=Poor 2. We are not limited to the four ...