High quality watertight sealing tape lubricates threaded joints during assembly. Helps prevent bi-metal corrosion. Suitable for cast iron, steel, alloys, plastic, brass and ceramics. Complies with BS6920-1:2000 and BS7786:2006. High quality watertight sealing tape lubricates threaded joints during assembly. Helps prevent bi-metal corrosion. Suitable for cast iron, steel, alloys, plastic, brass and ceramics. Complies with BS6920-1:2000 and BS7786:2006.