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A small nail hole can be fixed with a self tapping screw screwed into the hole. If you can turn the water off and it is a copper pipe you can also solder the screw in place. This would also work for a plastic pipe. You may need to seal it with a silicone gel similar to those products that seal around a bath. Otherwise cut pipe in half and get a compression coupling or flexible pipe repair section from Screwfix.com in the UK.
it is defined as the pipe cemented in the well to seal off formation fluids and to keep the hole from caving in.
be more specific.. wheres the leak..?? you might have to replace a seal.. or a pipe then recharge the system
For a temporary repair, yes and use as directed.
A hole has developed in the spout or where it screws onto the pipe needs more Teflon tape or joint compound to seal the threads.
Sure there is. Epoxy coating the inside of the pipes is what you are talking about. A liquid epoxy is put in the pipes, blown throughout the pipes, and cured in place to seal pin-hole leaks. It is a good technology that has been around for 25 years. It allows pipe repair without breaking concrete, but is a fairly expensive technology.
No it cannot be effectively repaired if water is in the joint. Best way is to find a plug of rubber, force it in hole and seal it inside with 100% silicon
If copper, drain the water out of the pipe, clean the spot and solder over the hole. Steel, either replace a section of pipe, take apart and reassemble making sure the joints have enough dope or teflon tape on them to seal.
Gasket
Pipe joint compound or Teflon tape
I wouldn't. Replace or repair the line instead.
no