These are all the possible seals you could find on your rig.
https://www.trekwood.com/parts-searc...23+%2F+Keyword
Our rig uses this bulb seal:
https://www.trekwood.com/products/14...ed-TPE-1000-Bx
and this seal at the slide opening:
https://www.trekwood.com/products/14...lip-On-1225-Bx
And, Trekwood sells these by the foot, and shipping for these are not bad.