O-Ring for Product Port 2.5" & 4" RO Pressure Vessels

Product O-Ring for A & M Composites 2.5" and 4" Reverse Osmosis Pressure Vessels. Inserts into the gray Plug with Concentrate and Permeate Ports (p/n ROEC007 for 2.5" vessels and p/n ROEC032 for the 4" vessels).

Also known as: Culligan p/n 00-4499-25 for FT-30 Adapter on M Series 1986-Present