Identify T-Slot Weatherseal

Can you help me identify this t-slot weatherseal from a window? The t-slot is 3/16'' and the hard plastic without the foam is 9/16''. At one point, it was foam-filled that may have made it longer and I can still see a little of the foam at the bottom of the sample, but the rest of the foam appears to have rotted away. It appears the foam was encased in a plastic wrapping that circled back to below the t-slot. In the picture, you can see some of this wrapping hanging off. On the back of the wrapping, it starts to give a brand name beginning with the letters "NOT". My sample was cut at 1 inch so the rest of the letters are not included. Thanks.