1979 argosy window gasket?

[Little city]

We are needing to replace all the gaskets around our windows. We are wondering where to purchase the gaskets or rubber? Also if anyone has any suggestions on this subject it would really be appreciated. I was also wondering on the window screens there is this fuzzy or hair like stuff that the mechanism to raise and lower the windows go through. I was wondering where I could buy more of that? And what it is called.
Thank you!