Contractor parts pricing needed
Thanks for posting. The spring rail you are referring to is the balance for the window. To recommend a proper replacement, I'll need to see a photo of the top and bottom fittings. The stamp is only used to determine the weight range your balances should be able to carry for the sash, I can't use it as a part number to identify the balances.
In regard to the "end caps" or the the tops sash guides, I'll need to see an undamaged version removed from the window. I am looking for a front profile as well as a side view; like a mugshot.
For the weather stripping, which you refer to as the rubber gasket, I'll need to see end profile. This means you will need to expose a small piece from the track so that we can get a good view of the shape of the weather strip.
You can include the requested photos in this thread by using the text box below this discussion.
To help with the noise and lubrication, we like to use white grease on channel balance springs.