[DugwayDuke]

I knew a guy who once fixed a leak in a gasoline line on his car with silly putty. The fire department was able to put out the fire.

[SkyDancer]

Soap in an emergency. It hardens almost on contact with gasoline. Saw it in action sealing a punctured gas tank.

[al baby]

I used my wifes i ud as a carberator return spring coming back from vegas

[july4thfreedomfoundation]

I heard the Apollo 8 astronauts used silly putty to hold small objects in place in zero gravity.

Don’t know if it was used on other Apollo flights.