Because of its unique molecular structure, granular PTFE does not melt. It cannot be molded into complex forms like other plastics. However, it is easily machined on all standard equipment, including the most advanced CNC machining equipment. PTFE can be cut, bored, milled and turned using standard tooling. Normally PTFE is machined to tolerances of about plus or minus .005 inches. While closer tolerances are occasionally required, they usually are not necessary. PTFE is very resilient which allows machined parts to conform to most working dimensions. A part can sometimes be press-fitted at lower cost than doing final machining to exact size. When closer tolerances are required, it is essential to use stress-relieved products. ...
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