There has been some confusion about vapor caps and the differences between the various models. All our vapor caps share the same internal parts and dimensions and they all vaporize identically. They all have identical stainless steel Lotus shaped rings, some being bare stainless steel and some covered with a black, baked on ceramic coating. The black rings are coated for visual appeal only and are functionally the same as the bare rings.
The Saucer cap is shaped differently than the other caps to provide an extra layer of protection for fingers that might accidentally come in contact with a recently used, and still hot, Lotus ring or hot plate. It also gives some protection to the hot plate from denting by miscellaneous objects during storage.