carbon,graphite and fiber can be filled. Detailed Product Description:1. PTFE piston rings are Grinding resistant, long life used, convenient for maintenance, lubricant, etc.        

2.PTFE piston ring is a new type sealing material which is the substitute of cast steel piston ring, they can protect piston body and guarantee inner wall of crock smooth from abrasion.

3. Carbon,graphite and fiber can be filled,according to customer's requirments.

About our factory:

-> Our factory is located in Yongsheng Industrial Development Zone,Yangzhong City,Jiangsu, which has convenient transportation and elegant surrounding.  You are warmly welcome to visit our factory.

-> We are a Professional PTFE manufacturer.

-> We specialize in PTFE which include sheet, bar, tube, tape, film, gasket,  braided packing and all special type components. We can meet your special demand.

-> Pls feel free to contact me.I will try my best to answer your questions about our products.