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50MM PTFE Banded Piston Wear Resisitance For Truck Shock Absorbers

50MM PTFE Banded Piston Wear Resisitance For Truck Shock Absorbers

  • 50MM PTFE Banded Piston Wear Resisitance For Truck Shock Absorbers
  • 50MM PTFE Banded Piston Wear Resisitance For Truck Shock Absorbers
  • 50MM PTFE Banded Piston Wear Resisitance For Truck Shock Absorbers
50MM PTFE Banded Piston Wear Resisitance For Truck Shock Absorbers
Product Details:
Place of Origin: China
Brand Name: XIAYI
Certification: IATF16949:2016
Model Number: Φ50mm
Payment & Shipping Terms:
Minimum Order Quantity: 1,000pcs
Price: negotiation
Packaging Details: According to customer's demand
Delivery Time: Two weeks after payment
Payment Terms: T/T, Western Union, L/C
Supply Ability: 30,000 pcs per month
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Detailed Product Description
Product Name: Shock Piston Filler Of Bands: Customized
Material Of Bands: PTFE Or Improved PTFE Color: Black
Density Of Bands: 2.15 G/cm3 Outer Diameter: 50mm
Sintering Temp.: Many Sections Application: Shock Absorbers
High Light:

50MM PTFE Banded Piston


Wear Resisitance PTFE Banded Piston


50MM Truck Truck Piston

50MM PTFE Banded Piston With Good Wear Resisitance Used In Truck Shock Absorbers


Conventional Design
Finished OD Tolerance of +/-20 Microns
Don't Require Secondary Operations
Banding Can Design with Single Lip or Double Lip
Potential for Uncontrolled Leak Paths

Dimension Bond Value Added Benefits
Tolerance +/-10 Microns
Wear Band Assembly Eliminated
Machining of Grooves Eliminated
Banding Materials Purchases Eliminated
Larger Baring Surface Area
No Banding to Dislodge, Shift, Split or Tear
No Uncontrolled Leak Paths
Allows For Shorter Overall Height & Less Metal Cost
Larger Diameter Valve Face Area for Design
Reduced Dead Length
Ease of Assembly into Pressure Tube
Greater Wear Resistance with Lower Friction


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


The Piston Process
Step 1: 100% Laser Inspection of the as-received OD ensures the correct amount of material is applied, thus yielding the finished dimension desired.

Step 2: Computer-controlled application of the Permanently Bonded Band material.

Step 3: 100% Laser Inspection of the OD ensures the desired finished dimension is obtained after process curing the band material.

Step 4: Apply Permanently Bonded 100% pass-thru gauging of each finished piston to assure the piston meets Form-Fit and Functional requirements prior to packaging. Band material via computer controlled metering.

Step 5: Product ready for assembly.


Xia Yi, found in 2006, after several years’ effort, we have achieved great success in the enterprise. We increased our workshop this year and developed several new automatic machines which highly improve work efficiency. We have a technical team to develop automatic machine and we improve our pressing machine and other machines to lower the cost and improve efficiency.

XIAYI company is specialized in design and producing PTFE banded shock absorber pistons,at the same time,we design and manufacture automatic skirting machines. Till now we have produced so many different types of shock absorber pistons with the diameter from ø20mm~ø50mm.We make PTFE discs and toolings in our own factory,can control the quality effectively and also can save much time.

The ability to apply the same technology across all types and sizes of pistons affords economies not available with other conventional band methodologies.

100% inspection and close tolerance permits part-to-part and unit-to-unit control of damping forces.

The quality of the material applied eliminates fragment contamination - oil tests following one million cycle bench testing have yielded near original oil quality. This is not typical on units employing a conventional band system.

Close tolerance control affords the closest fit, calibrated leakage around the piston, eliminating potential leak paths and/or uncontrolled leaks due to normal flexible bands distorting and wearing.

No machining cost eliminates the cost to groove the OD of the piston to retain the band.

Car or motorbike shock absorbers 
Competitive Advantage:
1. Consistency in size
2. Infrared ray detect the diameter
3. Strict control plan
4.100% testing for outer diameter
Picture show:

50MM PTFE Banded Piston Wear Resisitance For Truck Shock Absorbers 0

Contact Details
Ningbo XiaYi Electromechanical Technology Co.,Ltd.

Contact Person: Leela

Tel: 008618958226902

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