Silly Putty

Silly Putty is a toy containing silicone polymers that have unusual physical properties. It can flow like a liquid, bounce, stretch, or break depending on the amount of physical stress to which it is subjected. It contains viscoelastic liquid silicones, a type of non-Newtonian fluid, which makes it act as a viscous liquid over a long time period but as an elastic solid over a short time period. It was originally created during research into potential rubber substitutes for use by the United States in World War II.

"Silly Puddy" redirects here. For the song by Zion I, see Mind over Matter (Zion I album).
"Nutty putty" redirects here. For the cave in Utah, see Nutty Putty Cave.

The name Silly Putty is a trademark of Crayola LLC. Other names are used to market similar substances from other manufacturers.

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