daveroconn
The compression connector that you may use will come with brass sleeves and will not work with polyethelene tubing. You will need delrin sleeves and tubbing suports to use a brass compression fitting for your repair. If this is RO water the use of brass tubing supports is a bad idea. The acidity of the RO water will eat the brass tubing supports and the connector will fail in time. I have found stainless steel tubing supports they are made by Parker Hanafin. I would just use a John Guest fitting or replace the whole tube. Good luck
