hat
kasèt Thread yo anjeneral te fè nan politetrafluoroetilèn (PTFE), yon trè cristalline, pèrfluore polymère ki se pi bon li te ye nan mak DuPont li yo ak anrejistre trademark-tflon. PTFE tep gen yon koyefisyan ba anpil nan friksyon, bon rezistans pwodui chimik, ak bon rezistans chalè. Chimik inèrsi anpeche kwa-ki lye ak ak fè PTFE fil kasèt yon bon chwa pou aplikasyon pou ki enplike pwodwi chimik korozivite tankou oksijèn likid, oswa kostik tankou SODIUM amonyòm. kasèt Thread kapab tou gen pou te fè nan PE (PE), yon plastik pri ki ba-ki reziste dlo ak pwodwi chimik anpil.
eng
Thread tapes are usually made of polytetrafluoroethylene (PTFE), a highly crystalline, perfluorinated polymer that is better known by its DuPont brand and registered trademark—Teflon. PTFE tape has an extremely low coefficient of friction, good chemical resistance, and good heat resistance. Chemical inertness prevents cross-linking and makes PTFE thread tapes a good choice for applications that involve corrosive chemicals such as liquid oxygen, or caustics such as ammonium hydroxide. Thread tapes can also be made of polyethylene (PE), a low-cost plastic that resists water and many chemicals.