High Performance PTFE Piston Band for Suspension Systems

Engineered as a high-performance piston band for suspension systems, this carbon fiber filled PTFE gasket delivers exceptional creep resistance and dimensional stability at a precisely controlled density of 2.14 g/cm³. Manufactured using automated mold pressing technology, it provides the consistent thickness and surface finish required for sintered piston assemblies in modern automotive dampers.

PTFE has a wide range of practicable temperature from -180 ~ 260°C and a wax-like surface to which anything hardly sticks. PTFE has the lowest coefficient of friction of all known solid materials. It has the best electrical properties of all plastics.

Molded PTFE rod can be used as lining, seal components, wire isolation, slide block, gasket, seal, dielectric material, etc.

1. Good service: We treat clients as friends

2. Good quality: We have strict quality control system. Good reputation in the market

3. Quality Control: Approved by GB/T 19001-2008/ ISO9001:2008

4. Fast and cheap delivery: We have big discount from forwarder(Long Contract)

The optimal grade depends on your specific operating conditions. For high-wear applications, we recommend XYGF (glass fiber) series at 15-25% loading. For thermal conductivity and creep resistance, XYB-60 (bronze filled) or XYC-20 (carbon filled) are excellent choices. For chemical processing environments, XYG-15 (graphite filled) provides superior anti-corrosion performance. Our technical team can assist with grade selection based on your full application requirements.

Density is a critical indicator of filler content uniformity and sintering quality. A density of 2.14 g/cm³ for carbon fiber filled PTFE indicates optimal filler dispersion and complete sintering, translating to consistent mechanical properties, predictable wear rates, and reliable creep resistance. We control density to tight tolerances through computer-monitored pressing and sintering parameters.

Yes. PTFE possesses the best dielectric properties of all plastic materials, with a dielectric strength exceeding 18 kV/mm for pure grades. For applications requiring verified electrical insulation, we can provide dielectric strength test reports and volume resistivity measurements as part of the Certificate of Analysis. Note that filled grades have slightly reduced electrical properties depending on filler type and loading.

Our mold-press process achieves thickness tolerances of ±0.05mm on gaskets as thin as 0.5mm. For outer/inner diameter tolerances, we typically hold ±0.05mm on dimensions up to 50mm and ±0.10mm for larger sizes. Tighter tolerances can be achieved through post-machining when required. We recommend sharing your tolerance stack-up requirements during the RFQ stage for feasibility confirmation.

Carbon fiber filling provides superior thermal conductivity and lower thermal expansion compared to glass fiber at equivalent loading percentages. Carbon-filled PTFE also generates less abrasive wear on mating metal surfaces, making it preferable for high-cycle damper applications. Glass fiber, however, offers better electrical insulation properties and is more cost-effective for less demanding applications. We stock both grades and can advise based on your performance priorities.

Yes. Our new molding turnaround is approximately 7 days for simple geometry, enabling rapid design iteration. We can produce prototype quantities from CNC-machined PTFE stock for initial fitment and function testing before committing to production mold tooling. This hybrid approach significantly reduces development cycle time and tooling risk.