| http://www.w3.org/ns/prov#value | - The filamentary material employed in the practice of the invention can be made from any suitable plastic material which is impervious or inert to the fuel or other liquid stored in the tank or container, and which can be bulked or texturized as described above, Examples of suitable plastic materials include polyolefins, nylon, dacron, polyester, acrylic, polyu- Polypropylene and polyethylene are p
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