Graphite-Filled PTFE
Peflon graphite-filled PTFE — PTFE composite reinforced with graphite, a solid-lubricant filler that dramatically improves friction, wear resistance and thermal conductivity while preserving PTFE chemical inertness.
- 5 / 10 / 20 % Fill Options
- Lower Friction Coefficient
- Higher Thermal Conductivity
- Better Dimensional Stability
Graphite-Filled PTFE Filler Content
We select the appropriate filling ratio based on your application environment, loading conditions and cost-effectiveness target. Three stocked compositions from light reinforcement through heavy-duty load service. The base resin is PTFE (CAS 9002-84-0), a fluoropolymer commercialized by upstream producers such as Daikin, into which we disperse graphite to tune friction and wear.
5% Graphite-Filled PTFE
Maintains most PTFE properties while adding friction reduction and basic wear resistance — light-load and low-speed applications.
10% Graphite-Filled PTFE
Significant increase in wear resistance and thermal conductivity — suited for medium loads and elevated operating temperatures.
20% Graphite-Filled PTFE
Highest wear resistance and thermal conductivity in the range — suited for heavy loads and high-temperature service.
| Grade | Graphite Loading | Wear Resistance | Thermal Conductivity | Best For |
|---|---|---|---|---|
| 5% Graphite-Filled PTFE | 5% | Basic | Slightly improved | Light loads, low speed |
| 10% Graphite-Filled PTFE | 10% | Improved | Higher | Medium loads, elevated temperatures |
| 20% Graphite-Filled PTFE | 20% | Highest in range | Highest in range | Heavy loads, high-temperature service |
Applications of Graphite-Filled PTFE
Peflon graphite-filled PTFE is used across dynamic sealing, bearing and sliding-component applications where low friction, wear resistance and chemical inertness must coexist — available in four stock forms.
Graphite-Filled PTFE Rod
Cylindrical stock for machined bushings, slide bearings and valve seats.
Graphite-Filled PTFE Sheet
Flat stock for gaskets, slide pads and liners under dynamic load.
Graphite-Filled PTFE Seals
Piston rings, rotary seals and valve-seat elements in pumps and compressors.
Graphite-Filled PTFE Assemblies
Machined sub-components and tailored parts built to your drawing.
Key Features of Graphite-Filled PTFE
Graphite is a natural solid lubricant (crystalline carbon). Dispersing it into the PTFE matrix delivers four tangible improvements over unfilled PTFE — targeted at dynamic friction, wear, heat transfer and long-term loading.
- Lower Coefficient of Friction — Graphite reduces PTFE's friction, improving performance in sliding applications.
- Improved Wear Resistance — Graphite increases wear resistance for longer service life in high-wear environments.
- Enhanced Thermal Conductivity — Graphite raises PTFE's thermal conductivity for better heat dissipation in dynamic parts.
- Dimensional Stability — Improves PTFE's creep resistance for stable dimensions under long-term loading.
FAQ of Graphite-Filled PTFE
What is graphite-filled PTFE?
Graphite-filled PTFE is a PTFE compound reinforced with 5–20% graphite, a solid lubricant. The graphite lowers the coefficient of friction and improves wear resistance and thermal conductivity while the compound retains the chemical inertness and non-stick character of virgin PTFE.
Which graphite loading should I choose — 5%, 10% or 20%?
5% suits light loads and low speeds, 10% is a general-purpose grade for medium loads and elevated temperatures, and 20% gives the highest wear resistance and thermal conductivity for heavy loads and high-temperature service. We match the filling ratio to your loading, speed and cost target.
What are the main applications of graphite-filled PTFE?
It is used for dynamic seals, piston rings, rotary seals, slide bearings, bushings and valve seats in pumps and compressors — anywhere low friction, wear resistance and chemical inertness must coexist.
In what forms do you supply graphite-filled PTFE?
We stock rod, sheet and molded seals/piston rings, and we machine finished assemblies and sub-components to your drawing.
How does graphite-filled PTFE compare to glass- or bronze-filled PTFE?
Graphite is a solid lubricant that lowers friction and improves dry running; glass adds structural rigidity and creep resistance; bronze adds hardness and thermal conductivity for heavy loads. The right filler depends on whether you prioritize lubricity, stiffness or load capacity.
Other Filled PTFE Grades
Other Peflon filled PTFE compounds for adjacent performance profiles — glass for structural rigidity, bronze for hardness, MoS₂ for dry-film lubricity.
Modified PTFE
Overview of Peflon modified PTFE compounds and how to select a filler.
Glass Filled PTFE
Higher strength and structural rigidity for load-bearing service.
bronze-filled-PTFE
Higher hardness and thermal conductivity for heavy-friction service.
MoS₂ Filled PTFE
Molybdenum disulfide for dry-film lubrication under extreme pressure.
Need graphite-filled PTFE for your bearings or seals?
Tell us your loading, speed and operating temperature and we will recommend the graphite loading and form — rod, sheet, seal or machined assembly — that fits your application.