Ezi caps zepolypropylene zineempawu ezibalaseleyo zokutywina kwaye zibonelela ngokumelana neekhemikhali ezifanelekileyo kubandakanya iiasidi, iialkali, iialkali, iimveliso ezinamanzi, izinto zokuthambisa, kunye neoyile yasekhaya. IiPolypropylene Hole Caps zaziwa ngokomelela okuhle kwempembelelo, ukusebenza kakuhle kweendleko, kunye nokuthembeka. I-Septa ithengiswa ngokwahlukeneyo.