Todayâs American cheese is, by law, required to be manufactured from at least 2 types of cheese. Because its manufacturing process differs from unprocessed/raw/natural cheeses, American cheese can not be legally sold under the name (authentic)  cheese  in the US.nstead, federal (and even some state) laws mandate that it be labeled as  processed cheese  if simply made from combining more than one cheese, or cheese food if dairy ingredients such as cream, milk, skim milk, buttermilk, cheese whey, or albumin from cheese whey are added.
The sealant's specialized polymers that can seal all metals, paint, and plastic surfaces. A polymer sealant is an ideal add-on service for auto dealerships or detailers. It may be sold with a warranty as a superb, long term protection for new or used vehicles. Application is easy and fast.
Polyurethane on the other hand is a polymer (PU), which people think of as urethane, and is commonly used in production of seals, gaskets, soles of shoes, flexible foams, tires, seats, adhesives, fibers and many types of plastics.olyurethane on the other hand is a polymer (PU), which people think of as urethane, and is commonly used in production of seals, gaskets, soles of shoes, flexible foams, tires, seats, adhesives, fibers and many types of plastics.