Arctic Spray pipe freezers have been used by professional plumbers for over 35 years. A 15mm copper pipe can be frozen in less than 10 minutes & the pipe will remain frozen for up to an hour, allowing ample time for the repair work to be carried out without the risk of flooding. Capable of withstanding pressures in excess of 12bar (175 psi), Arctic Spray is suitable for all pipe materials including plastic (requires a freezing jacket as supplied in the Arctic Spray Starter Kit in addition to this canister). Canister of Pipe Freezing spray Use in conjunction with a freezing jacket as supplied with product B001FJRUCG Box Contents Canister of Pipe Freezing Spray.