Problem:  A 2007 RB equipped with a Dometic Sealand toilet with the paint   coming off the wooden seat.
Solution:  Walmart has a  near-perfect match for the princely sum of $8.97 plus tax. The description is  "molded wood, standard bowl, "bone" in color, plastic hinges attached with nylon  screws from the top.
The various numbers on the package are "NVP 110  Bone", Bar-code - 47215 1037 1145750, and what is probably Walmart's item  #12451.
Contributor: George (Arby The RB)