作為氟塑料中最典型的品種，PTFE和PVDF是具有最優良的耐腐蝕性能，其中PTFE更是所有已知工程塑料中耐腐蝕性最好的，可用於所有的濃酸及濃鹼場合，包括HF及發煙硫酸硝酸（98%以上）等，且具有良好的高溫表現，PTFE證明可用於180℃的高溫，PVDF也能用到150℃，但PTEF材料機械強度極低，且尺寸穩定性較差，溫度變形大，相比較而言PVDF具有更佳的綜合性能，一般內外圈材料選用PTFE或PVDF，保持架材料為PTFE或PVDF，滾珠一般為陶瓷球。

As the typical type of fiuoro plastic, PTFE and PVDF have the most excellent anti-corrosion per for mance,among them As the typical type of fluoroplastic, PTFE and PVDF have the most excellent anti-corrosion performance, among them PTFE is the best of all the plastic known to man, could be used in all the Strong Acid and Alkali application, including HF and smoke formation H2SO4 HNO3 or HCL(98%) above). etc. and could be used in high temperature application. PTTFE could be used to 180℃ and PVDF to 150℃. But PTFE has very low mechanical strength, easy to be out of shape and have large Dimension change when the temperature rise or reduce. So couldn't be used in heavy load and high-speed occasion, Compared with PTFE, PVDF. Has better compositive performance, Generaly the rings and cage made with PTFE or PVDF, Balls made with glass, ceramic or stainless