Amazon.com: J-B Weld 8277 WaterWeld Epoxy Putty Stick – 2 …

As I had multiple leaks to contend with I ended up with encrusted hand. To remove dried putty from your hands I suggest using acetone. I soaked triple layered paper towels in acetone, then wrapped around my hands and left in place for 30 sec or so and then used the soaked paper towel to scrub the putty off my hands. Wash hands well with water.

https://www.amazon.com/J-B-Weld-8277-White-Pack/dp/B000BRQ0TW