I had to replace some of the seals on my Pilgrim 5th wheel. Pilgrim went out of business in 2008. Believe it or not I purchased some of them through Amazon and found another one I needed on eBay. The most important part is getting the correct dimensions. Once you've narrowed that down a little searching will yield a lot of results. A little bit of research and I found exactly everything I needed for a very reasonable price.
I just replaced my seals. Bought replacements from factoryrvsurplus.com. My seals are two piece, a wiper seal with a track that a separate bulb seal attaches to. The wiper seal was fine but the bulb seal needed to be replaced. The bulb seal was $3.50/lf and I needed 27' so not the end of the world $$$ wise. The wiper seal is much more expensive at $6/lf and a much bigger hassle to replace.
Old Biscuit, did you have a link to go with your message? Wondering who sells the seals that will work by the foot! :h PS... I sent old Biscuit an email asking if he could edit his post to include a link as I'm curious about his source!
Alfred 2005 Sightseer with Workhorse, ReadyBrute Elite towing 2003 Honda CRV Map below shows states where we actually camped.....