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Quick Details

  • Standard or Nonstandard: Nonstandard
  • Style: Mechanical Seal
  • Material: PTFE, 100% virgin PTFE
  • Place of Origin: Shanghai, China (Mainland)
  • Brand Name: Mayshee
  • Model Number: ptfe
  • color: white
  • Temperature range: -180℃~+260℃
  • Item: PTFE back up ring
  • Sample: Free
  • MOQ: 1000pcs
  • Delivery time: 20 working days
  • OEM: acceptable

Packaging & Delivery

Packaging Details PTFE ring packing: Inner polybag, Outer Carton
Delivery Time PTFE ring delivery time:20days after receipt of your deposit



Spiral PTFE ( Teflon ) Backup Rings


PTFE backup rings are used for static and dynamic applications. It's better used for static sealing applications with corresponding O-ring.

The use of PTFE backup ring will help control O-ring extrusion in high pressure applictions. PTFE backup rings are compatible with all hydraulic fluids,since they are virtually chemically inert,and also can be used in applications involving elevated operating temperature conditions.In addition,PTFE backup rings can greatly improve O-ring performance and extend service life, even if extrusion does not present a problem.



We manufacture various different profile of PTFE seals include:

O-rings, back-up rings, guide/bearing rings, piston rings. rotary rings, valve seats, diaphragms, etc.


Material range:

100%virgin PTFE for light and medium load requirements.

 PTFE with filler( Glass/Graphite/Carbon/Bronze)for greater load requirements.

Virgin PTFE100% PTFE
Filled PTFEFiller Type
Inorganic fillerGlass fiber, Graphite, Bronze, Carbon fiber, MoS2
Organic fillerPolyimide, Aromatic Polyester, Polypheylene Sulfide 

Depending on applications, PTFE can be mixed with fillers to meet the requirements of application in order to provide the optimum sealing properties.


Excellent resistance to corrosion and chemical products
Wide temperature using range(up to 250 degree)

Low coefficient of friction
Self lubrication
Improvement in resistance to wear

Good sealing 





1. Low cost

 --- Land/HR/Material

2. Professional

      ---15 years experience

3. Efficient

      ---Advanced production equipment and strict management

4. Control

      ---ISO9001&TS16949, FDA, ROHS, REACH reports

5. OEM accepted

      --- JUST provide drawing or samples

6. Fast and cheap delivery

      ---We have big discount from forwarder (Long contract)

Samples charge:

      ---Depending on your request, sampling time:3-7days

      ---Free for existing sample, sampling time:1day




Our staff of sales and technical support is available to help you in selecting the right product for your application as well as to provide you with our samples for evaluation. At Mayshee, we are committed to providing the top quality products, high level of customer service, competitive pricing and speedy delivery. Our ultimate goal is your satisfaction. 








Wuxi Mayshee PTFE is a special engineering plastic industry leader full of 10 years experience in this field,with a research and manufacturing plant in Jinshan district Shanghai and ISO 9001:2008 certified.

We devote to R&D and producing varieties of PTFE,PFA,PCTFE,POM,PEEK,UPE,PP and other special engineering plastic products. All items are made by high precision machining but with competitive price.

Main products:


Back up rings                                                                              

Valve seats                                                        




Hydraulic seals                                                                      




Production capability-Machines:

 2 Skiving machines                                                 

20 Milling Machines
35 CNC lathes           

40 Presses

10 Ovens

25 Others

Main Markets:

Asia, Europe, America, Australia, Middle East

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