We require synthetic meter seals and sealing wire about 500,000 annually The seals shall consist of a Synthetic-Body, Sysnthetic-Insert & Aire-Sealing The synthetic material shall be weather resistant, with long life and be able to withstand ultra-violet radiation, heat & temperature for long periods and resistant to damp, water-spray & salt-mist conditions. The sysnthetic material shall conform to ISO 4611, ISO 4582 & ISO 62. The Sealing Wire shall be suitable for above synthetic meter seals and it shall be made of galvanized steel wire to BS 1052 / BS 2763 The galvanizing coating thickness shall conform to BS 443.M