I have had our coach at Redlands Truck and RV for a while fixing a number of things. One was to replace all of the slide seals. Took them four manufacturers to find the bottom seal. They have enough on hand to do one more, but the good thing is that Chris will keep the manufacturer on record should he need more.
2001 34' Alpine Coach
2008 Jeep Rubicon or 2012 Ford F150 4x4 Lariat towds
or a couple of different trailers
Retired in Apple Valley, California