• Ningbo WeiWo Electromechanical Tech Co.,Ltd.
    We do business with each other for long time and will continue our cooperation. Quality partner!
  • Ningbo WeiWo Electromechanical Tech Co.,Ltd.
    Alexiou Aris
    Good quality and competitive price, I'm sure we will go further and further!
  • Ningbo WeiWo Electromechanical Tech Co.,Ltd.
    Work together long time, we like friends each other, easy to get along with, very pleasant cooperation!
Contact Person : Leela
Phone Number : 86-13586885132
WhatsApp : +8613586885132

Black PTFE Banded Piston With Low Friction Unique Holes

Place of Origin China
Brand Name WEIWO
Certification IATF16949 : 2016
Model Number Φ27mm
Minimum Order Quantity 2,000pcs
Price negotiation
Packaging Details According to customer’s demand
Delivery Time One week after payment
Payment Terms T/T, Western Union, L/C
Supply Ability 50,000 pcs per month
Product Details
Product Name Banded Piston Filler Of Bands Graphite Carbon
Material Of Bands PTFE Color Black
Application Car Shocks Density Of Bands 2.06-2.19 G/cm3
Outer Diameter 27.05mm Friction Coef. 0.18
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27mm Banded Piston


PTFE Banded Piston


graphite carbon Banded Piston

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Product Description

Unique holes design 32# PTFE banded piston with low friction and PPAP documents




Physical performance for shock piston

tensile strength

More than 18MPa

elongation @ break

More than 160%

shore hardness (bands)

57 - 61


2.06 – 2.19 g/cm3


Less than 50mg

friction coefficient

Less than 0.2

hardness (sinter piston)


Technical requirements for sinter piston

Raw material F50 - U3 - 66 or FC - 0208

Steam treatment

OD tested by digital air gauge


Our piston can do the following test :

1)stress cracking test,150ºС*500 hours

2)drawing load test:39.2 MPa*10,000cycles

3)high vilocity operation,durability test:1,000,000 cycles

4)regular operating durability test:3,000,000 cycles

No band peel off or breakage after test.




PTFE bands Powder metal piston 27mm shock absorber Suspension Piston for shock absorber


No foreign material or burr for PTFE disc


Product Name:Powder Metal Part - Piston for Shock Absorber


Raw Materials:Fe-C-Cu for sinter piston / PTFE + carbon for PTFE disc


100% test of pistons’ appearance


No sinter powder on the pistons


Processing for sinter piston and PTFE banding


Quality Control: 100% inspection on critical dimensions


Production Output: 100,000 pieces/month


Experience: Many years of professional OEM service


Material: Aluminum, brass, stainless steel, copper, alloys,etc.


Supply chain process: PPAP


Ability: To develop hundreds of news parts annually




1. Auto Mechanical Press: 50T, 100T, 140T


2. Hydraulic Press: 100T, 315T, 600T, 800T


3. Six sinter furnaces, including one harden Sinter Furnace


4. Heat treatment: Carbonitriding quenching and high frequency quenching


5. Ultrasonic clearing and auto burring


6. In-house tooling making: EDM, wire cutting machine


7. Strength in machining: Machine center, CNC milling, CNC lathe, Two end lapper etc.




Car or motorbike shock absorbers


Competitive Advantage:


1) Our factory has been accredited the ISO9001:2008 certificate.


2) Using different raw materials.


3) Have our own plant, can tell you the progress of production accurately.


4) We can make the products according to customer's drawings.


Picture show:

Black PTFE Banded Piston With Low Friction Unique Holes 0