... ,prevent leakage OEM service,SGS Specification Description: --.Aluminium Foil Heat Seal Lids And Rolls--.Material:aluminium foil + PP easy sealing filmaluminium foil + PS ... :WorkShop--.width for rolls: according to your needAvailable Diameter for Lids 39mm,47mm,51.2mm,56mm,56.5mm,60mm,62mm,65mm ...