I bought new seal at a RV dealership service/parts counter. My 1992 Dutchmen required new seals so I decided to upgrade to a newer design with better sealing properties. I forget the cost, I think about what you were quoted, but the seal was worth it, the original never did seal as good as the new.
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"