clad casement window weather seal

[Frank Thompson]

Not sure of terminology... weather strip, seal or gasket. I am referring to item on all four sides of the movable part of window that eventually wears out due to opening and closing window. Is there anything that can be added to the groove in which the item is anchored to prevent it from falling out with usage.. something that will not make it impossible to remove if it needs replacing.

[DanG]

It sounds as if you need new gasketing. 3M weatherstrip adhesive would be quite common to use to hold one in. Readily available at good auto parts, etc - usually comes in black, yellow, or clear.