I think that there is a detailer interpretation between what someone considers a wax and what is a sealant and what is a hybrid-combination of the two. In effect, ALL waxes are a combination of chemicals that allow them to be "pliable" and some are combined with sealant-like chemicals to add environmental protection and longevity to them. Two waxes stand out in this category to me: Collinite 476S and Finish-Kare`s FK1000P Hi-Temp wax. These two (hybrid) waxes are Autopia forum favorites and used by many for winter-driven vehicles because of their protection and longevity characteristics and the fact that they are easy to apply and relatively inexpensive as last-step products (LSPs) go.
One variable that seems to go unnoticed on longevity is the type of paint and the color of the paint on a vehicle. A single-stage paint is really bare paint that will fade over time because of its exposure to UV rays. A dark-colored paint will generate more heat that is detrimental to the life-expectancy (longevity) of a wax. Most manufacturers use water-based paints for assembly-line production (Original Equipment of Manufacturer or OEM paint) because of environmental emission compliancy laws that are "different" than custom paint shops that may use solvent-based paints. An old lacquer finish is much different than a modern acrylic paint. My point is that paint type and color is another variable in LSP (sealant, wax, or coating) longevity.
One variable that seems to go unnoticed on longevity is the type of paint and the color of the paint on a vehicle. A single-stage paint is really bare paint that will fade over time because of its exposure to UV rays. A dark-colored paint will generate more heat that is detrimental to the life-expectancy (longevity) of a wax. Most manufacturers use water-based paints for assembly-line production (Original Equipment of Manufacturer or OEM paint) because of environmental emission compliancy laws that are "different" than custom paint shops that may use solvent-based paints. An old lacquer finish is much different than a modern acrylic paint. My point is that paint type and color is another variable in LSP (sealant, wax, or coating) longevity.