1. The color of teflon is the color of resin.
2. The quality should be uniform and the appearance should be flat. No defects such as cracks, bubbles, decontamination, mechanical damage and knife marks are allowed.
3. Slight cloud mottling is allowed.
4. No more than 1 non-metallic impurity with diameter of 0.1-0.5mm and no more than 1 non-metallic impurity with diameter of 0.5-2mm are allowed on an area of 10 x 10cm.
5. The density is 2.1-2.3T/m3.
Polytetrafluoroethylene bars, pipes, films, bearings, washers, valves and other unusual materials and parts, widely used in machinery, chemical, aviation, electrical and electronics, defense industry, cutting-edge technology, medical and health and electrical insulation, and other fields.
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