Off of the Simm's web site:
Repairing Your Simms Gore-Tex Waders
Tears, punctures and pinholes do happen. Luckily, Gore-Tex? waders are easy to repair. 1) Turn waders inside out. 2) Apply rubbing alcohol to suspect area. Leaks will show as dark gray spots. 3) Immediately apply AquaSeal? to the area and cure for six hours. Please note: this method will not work on seam leaks. If you think you have a seam leak, call 406-585-3557 for information on returning your waders for repair.
"The reason you have a good vision is you're standing on the shoulders of giants." ~ Andy Batcho