Seemed like a good one for the recall category, though there was not apparently a formal recall.
Perfection Corporation is the manufacturer of 90% of the dip tubes used in domestic water heaters. This includes the most popular brands like: State, A.O. Smith, and Rheem. The Consumer Product Safety Commission has not issued a recall because they did not find a safety concern with the failures. When the dip tube fails, the amount of usable hot water may be significantly reduced and faucets may become clogged with plastic pieces of the failed tube.
The dip tubes, which deteriorate into a gel-like substance or plastic particles, may mix with hot water supplied throughout the household, potentially damaging appliances and infiltrating household plumbing systems. The polypropylene dip tubes were installed in hot water heaters sold and distributed throughout the country since approximately 1993.
Perfection had been manufacturing and selling plastic dip tubes for approximately 40 years. In 1992, Perfection entered into negotiations with Manner Plastics Materials, Inc. for the purchase of a proprietary form of polypropylene called Prolene 6654 (Prolene). Between August 1993 and October 1996, Perfection manufactured its dip tubes out of Prolene.
https://www.illinoiscourts.gov/Resources/99b4b9b6-8888-4575-99c3-0274d1aceddd/1030095.htm