The best, quality and price
No affiliation, just satisfied customer
https://www.ebay.com/itm/JBL-LE-25-...-Original-Equipment-Manufacture-/311939436288
I bought a pair of those, and it just isn't worth the $8.00 to send them back but they are NOT original color or density. If you like the sparkly furnace air filter look of these ebay ones, go for it. I much prefer original look and material.
I bought several pairs to try to find the original color and density and feel that the Simply Speakers ones nail it. Further, I am ordering a second pair of simply speakers foam rings because they happen to also be the same foam that JBL used for damper foam in the 035T & 035Ti tweeter (also no affiliation but a satisfied customer). https://www.simplyspeakers.com/jbl-speaker-foam-edge-repair-kit-tweeter-le25-fsk-le25.html
If you're in the NE Indiana area and want these ebay foams feel free to contact me (free), they're otherwise going in the trash today.