The product identified as PVDC or vinylidene chloride has improved chemical resistance and mechanical properties, including heat stability (100 °C/ 212 F). This material has had a great significance in chemical industry applications over the years. The product has been made into a number of specific items designed to serve the chemical process industry. Among these are valves, pumps, piping, and liners (particularly on the inside of the pipe). The latter product was the first thermoplastic to be used for this purpose and found extensive and useful service throughout the USA as Saran.
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