I recently came into possession of quite a lot of Festool Granat Abrasives in 125mm and 150mm size (with just a tad bit of Rubin). I presume these came from the same era as the sanders I got them with - circa 2017. The 150mm abrasives do not have the hole pattern of the current Jetstream. Some of the Granat colors seem "faded" compared to modern Granat purchased recently, some even look a bit on the green side instead of light blue.
Overall, the abrasives look clean. Their boxes are in good condition and they do not seem to have any kind of mold or mildew on them (unlike some of the pics I've seen online from other sellers).
I'm wondering if there is some kind of lifespan or half-life to the abrasives, or if they can last indefinitely?
Thanks!