Sorry, but I'm not certain what these two parts are called, even though both for sliding glass doors, and in the weatherstripping family I'm sure.
Part 1) At the top of the sliding glass door, inside the horizontal track the door rides in, there is a small strip of weatherstripping/fuzzy/hairy looking piece that sits inside a groove and runs from one end of the track to the other end, full length.
Part 2) Same idea and basic description for this part except that it runs vertically along the back edge of the sliding glass door so that when the door is in the closed position, it seals the gap between the stationary part of the door and the slider.
Who might carry these and what are they called?
Thanks for any help you might be able to offer insight to!