I have a copper or brass not sure which compression fitting that I need to insert a 10mm plastic pipe into. The fitting comes with the metal olive ring. From what I have read, I can use this olive ring on the plastic pipe. But question is do I need metal insert for the plastic pipe or will a plastic insert work? The only metal inserts I can find are these: http://www.screwfix.com/p/pipelife-qual-oil-copper-inserts-10mm-10-pack/96675
Will they work?
Will they work?