Swiping seal

[Mike3393]

The last time I let my living room slide out I notice the top 6 inches of my wiper seal is torn and hanging down. How do you replace it and where can I get it? 2014 3010DS

[Duckogram]

Here is one source:
Seals : AP Products, RV/Mobile Home Hardware
PPL, Amazon, Dyers and Tweetys are other good sources.

Seals can be 3m tape mounted, screwed on, pop riveted and clip on. You should take a cross section measurement to match it.