In order for the something to float it must have a specific gravity less then water, which is 1. The polypropylene has a .90-.91 specific gravity and the polyethylene has a .94 - .965. These are the only two that will float.
Nylon has a specific gravity of 1.09 – 1.14.
Teflon has a specific gravity of 2.13-2.22.
Acrylic has a specific gravity of 1.17-1.20.
Title: Which of the solid plastic balls float?
Description: How to know if your plastic will float or sink.
Last Edited: 9/19/2013
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