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Core Characteristics
Characteristic
Technical Parameters
Industry Advantages
Temperature Resistance
-200°C ~ +260°C (short-term 300°C)
Suitable for extreme temperature environments
Chemical Resistance
Resists all strong acids/alkalis (except molten alkali metals and fluorine)
Unmatched corrosion resistance
Friction Coefficient
0.04–0.08 (dry friction)
Self-lubricating, reduces equipment wear
Insulation Performance
Dielectric strength >40 kV/mm
Preferred for high-voltage electrical insulation
Density
2.1–2.3 g/cm³
Lightweight design
Product Categories
Type
Process Features
Typical Applications
Pure PTFE Rods
100% PTFE resin, turning precision ±0.1mm
Seals in highly corrosive environments
Reinforced Filled Type
Glass fiber/graphite/bronze powder (15–40%)
Wear-resistant bearings/guides
Medical Grade Rods
USP Class VI compliant, Ra ≤0.8μm
Surgical instrument components
Conductive Type
Carbon fiber filled (resistivity 10³–10⁶ Ω·cm)
Anti-static equipment parts
Specifications
Parameter
Parameter Range
Customizable Range
Diameter
Φ5–300 mm
Φ2–500 mm
Length
500–1000 mm
50–2000 mm
Tolerance Grade
h7–h9
Special precision up to h6
Flexural Strength
15–35MPa (pure PTFE)
Up to 80 MPa (filled type)
Machining Guidelines
1. Machining Characteristics
· Turning: Recommended cutting speed 60–120 m/min
· Drilling: Use 15° rake angle drill bits, optional coolant
· Surface Treatment: Sodium naphthalene solution activation achieves bonding strength up to 5 MPa
2. Thermoforming Process
Parameter
Value
Sintering Temperature
365–380°C
Holding Time
1 h/25 mm thickness
Cooling Rate
≤30°C/h (prevents cracking)
Industry Applications
Field
Typical Components
Technical Advantages
Chemical Industry
Valve seats, pump shaft sleeves
Resists 98% sulfuric acid, service life >5 years
Power Industry
Insulating support rods, cable terminals
Arc resistance >180 s
Food Industry
Conveyor rollers, mold linings
FDA certified, zero contamination
Semiconductor
Wafer clamps, vacuum chamber parts
Cleanliness Class 10
Quick Selection Guide
| Working Condition | Recommended Type | Technical Basis |
| Strong Acid Environments | Pure PTFE Rods | Optimal chemical penetration resistance |
| High-Load Bearings | 25% Glass Fiber Filled Rods | Compressive strength increased by 300% |
| Food Contact | Medical Grade White Rods | Complies with FDA 21 CFR 177.1550 |
| Anti-static Requirements | 15% Carbon Fiber Filled Rods | Surface resistivity 10⁴–10⁶ Ω |
Basic Performance Comparison
Basic Performance Comparison
PTFE Rods
Nylon Rods
304 Stainless Steel Rods
PEEK Rods
Density (g/cm³)
2.1–2.3
1.12–1.15
7.9–8.0
1.3–1.4
Continuous Service Temp.
-200°C~+260°C
-40°C~+120°C
200°C~+800°C
-100°C~+250°C
Heat Deflection Temp.
120°C (0.45MPa)
80°C (1.8MPa)
>1000°C
>1000°C
Tensile Strength (MPa)
15–35 (pure) 50–80 (filled)
70–90
500–700
90–100
Friction Coefficient
0.04–0.08
0.2–0.3
0.5–0.8 (lubricated)
0.3–0.4
Chemical Resistance
Resists all strong acids/alkalis (except molten alkali metals/fluorine)
Poor resistance to strong acids/oxidizers
Poor resistance to halides (e.g., chloride ions)
Resists weak acids/alkalis, poor resistance to concentrated sulfuric acid
Special Modification Solutions
Technologies to Enhance PTFE Rod Performance
1. Nano-Alumina Filling:
· Wear resistance improved by 300%
· Thermal conductivity increased to 1.2 W/m·K
2. Graphene Reinforcement:
· Anti-creep performance improved by 8 times
· Suitable for high-pressure dynamic seals
3. Metal Insert Composite:
· Compressive strength up to 120 MPa
· Suitable for hydraulic cylinder guide sleeves
Industry Replacement Cases
Original Material
Replaced with PTFE Rods
Benefits
Stainless Steel Bushing
Carbon Fiber Filled PTFE Rods
Service life: 1 year → 5 years, noise reduction by 15 dB
Nylon Gears
Glass Fiber Filled PTFE Rods
Acid resistance improved, maintenance cycle ×3
PEEK Insulating Parts
Pure PTFE Rods (non-critical parts)
Cost reduced by 70%, performance meets requirements
Note: Specific replacements require simulated working condition tests.
