Double hung style aluminum windows

There are no markings or name on the frame or glass. It is an aluminum double hung style window, only the lower window moves. It uses spiral rods for the tension/support spring. The seal picture and drawing are upside down compared to the actual installation orientation. This seal is on the bottom of the movable window and seals the bottom of the window against the bottom sill/jamb. There is a T slot in the bottom of the window. The "bulb" part of the pictured seal faces outside. The measurements shown were taken with a digital caliper. The seal is 20 years old and very stiff/inflexible. The dimensions vary as much as .01 - .05 depending on where I measure due to drying, compression and age.