I've used this SIL-poxy to fix the same crack in my activity tracker's silicone band 3 times since April. The bond is valid for about a month and a half before it is released. I will admit that there is not a lot of silicone in the product but after reading the product description and some reviews I expected it to last longer than it actually does. However, I never expected it to last forever. The price I paid for the product was certainly less than what I would have had to pay for a new tracker, which was my only other alternative as an unnamed manufacturer saw fit to design the tracker that the tape was an integral part of the tracking mechanism and cannot be replaced. . I'm sure I'll never make that mistake again. If you're looking for a solution good enough to last a while, this is the product. After some internet surfing I could not identify any other products that could permanently bind silicone. Would I buy it again, probably because it's cheaper than the alternative.