[Class : 17] Watertight Rings For Plumbing Pipes, Waterproof Membranes Of Pvc, Waterproof Membranes Made Of Pvc, Stuffing Materials Made Of Plastics, Semi Processed Thermoplastic Polymer Resins, Semi Processed Plastics, Seals, Not Of Metal, For Pipes, Pipe Sealing Compositions, Non Metallic Pipe Fittings, Non Metallic Pipe Extensions, Non Metallic Pipe Couplings, Non Metalli...