Senoufou, I've only ever seen the one like that, but then, I'm only a stripling of 76..... But I do remember when old books mentioned Gutta Percha. I suspect rubber wasn't common before motor vehicles.

Keberoxu, frozen door locks are the reason why cans of CRC have the tiny tube. But, you have to spray inside the keyhole BEFORE it freezes.
The locks don't freeze, dampness inside the locks does.