Ningbo Zhonggao Rubber & Plastic Manufacturing Co., Ltd. is one of the most reliable manufacturers and suppliers of ptfe backup ring in China. The company has world-leading production equipment and strong manufacturing capabilities. Welcome to wholesale custom made ptfe backup ring from our factory.
Material Properties
Excellent extrusion resistance
• Prevents O-rings/star rings from being squeezed into the sealing gap under high pressure.
Low friction coefficient
• PTFE's self-lubricating property (friction coefficient 0.04-0.1) can reduce movement resistance
• Suitable for dynamic sealing
Chemical corrosion resistance
• Resistant to almost all strong acids, strong bases, and organic solvents (except molten alkali metals and fluorinated media).
Non-adhesive
• Not easy to adhere to metal or other materials, easy to install and maintain.
Wide temperature range
• -100°C ~ +280°C (up to 300°C for short term);
• Suitable for extreme temperature environments.
Low deformation
• PTFE is harder than rubber retaining rings and can effectively support the seal and prevent extrusion.
Customized Services
Customizable Materials
Pure PTFE: Standard chemical resistance, suitable for medium-high pressure and corrosive environments.
Glass-filled PTFE: Enhanced rigidity and better extrusion resistance. It is suitable for ultra-high pressure (>40MPa) environments.
Graphite-filled PTFE: Improved high temperature resistance (up to 300°C). It is suitable for high-temperature steam or hot oil systems.
• Customizable cross-sectional shapes:
Rectangular, V-shaped, L-shaped (need to match the groove design).
Value-added Machining
Specialized secondary processing capabilities such as precision perforation, CNC stamping, and edge profiling.
FAQ
Q: Is there the products tested before shipping?
A: Yes, of course. All of our products we all will has been 100% QC before shipping. We test every batch every day.
Q: If l have a product wants to be made in other special material, can you do it?
A: Of course, you just need to provide us designed drawings or sample and R&D department will estimate that whether we can do or not, we will give you the most satisfactory reply.
Q: Can I request to change the form of packaging and transportation?
A: Yes, We can change the form of the packaging and transportation according to your request, but you have to bear their own costs incurred during this period and the spreads.
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