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Efalon® Carbon-filled K-25
- Chemical Family
- Fluoropolymers
Efalon® Carbon-filled K-25 is a PTFE carbon filled(C25 and C35) have less thermal expansion, higher wear resistance, less deformation under load properties compared to virgin Efalon®. Carbon filled PTFE has excellent mechanical and wear properties, retains the excellent frictional properties and is an excellent choice for seals and rings in dynamic and high pressure applications.
Properties
- Physical Form
- Rods, Sheets, Tube
- Rods
- Sheets
- Tube
Product families
Industrial — Chemical & Industrial Manufacturing
- Equipment & Parts
- Other Industrial Applications
Other characteristics
- Brand
- Efalon
- Density
- 2050.0 - 2150.0 kg/m³
- Features
Corrosion Resistant, Excellent Mechanical Strength, Low Deformation Tendency, Low Thermal Expansion, Thermally Insulating, Wear Resistant
- Polymer Name
- Polytetrafluoroethylene (PTFE)
- Reinforcement Material
- Carbon Fibers
- Markets
- Industrial
- Key Benefits
Very good resistance to deformation under load; Very high wear resistance in dry and greasy environments; Resistant in corrosive environments; Ideal for hydrated environments; High heat insulation
- Technology
- Composite Materials
- Plastics
- Fillers Included
- Carbon Fiber
- Product Families
- Composite Materials — Parts & Shapes
- Plastics — Parts, Shapes & Films
- Material Features
- Corrosion Resistant
- Excellent Mechanical Strength
- Low Deformation Tendency
- Low Thermal Expansion
- Thermally Insulating
- Wear Resistant
- Plastics and Elastomers End Uses
- Bearings
- Gaskets
- Piston Rings
Technical data
Table 1 of 5
9 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Tensile Strength at Break | 110 - 210 | Kg/cm² | D638 |
| Compressive Stress (%1 Deformation, 23°C) | 85 - 110 | Kg/cm² | D695 |
| Total Deformation | 2.9 - 4.8 | % | D621 |
| Permanent Deformation | 0.4 - 2.1 | % | D621 |
| Elongation at Break (23°C) | 70 - 110 | % | D638 |
| Impact Resistance (Izod, Notched) | 8.5 - 9 | Kj/m² | D256 |
| Hardness | 65 - 68 | Shore D | D2240 |
| Total Deformation Under Weight (10 kg/cm² Load, 150°C, 24 hours) | 1.8 - 2 | % | — |
| Total Deformation Under Weight (50 kg/cm² Load, 150°C, 24 hours) | 8 - 9 | % | — |
Table 2 of 5
5 rows| Characteristic | Value | Unit |
|---|---|---|
| Coefficient of Friction (Static) | 0.11 | — |
| Coefficient of Friction (Dynamic) | 0.12 | — |
| PV Limits (3 m/min) | 220 - 230 | kg.cm³.min |
| PV Limits (30 m/min) | 250 - 400 | kg.cm³.min |
| PV Limits (300 m/min) | 300 - 450 | kg.cm³.min |
Table 3 of 5
1 row| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Density (23°C) | 2.05 - 2.15 | g/cm³ | D792 |
Table 4 of 5
6 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Coefficient of Linear Thermal Expansion (25°C-100°C, [x10^-5]) | 9.5 -10 | °C-1 | D696 |
| Coefficient of Linear Thermal Expansion (25°C-100°C, [x10^-5]) | 11 - 12 | °C-1 | D696 |
| Coefficient of Linear Thermal Expansion (25°C-100°C, [x10^-5]) | 13 - 15 | °C-1 | D696 |
| Heat Conductivity (30°C, [x10^-4]) | 15 - 17 | Cal/cm.sn.°C | — |
| Maximum Allowable Service Temperature in Air - Continuous | 270 | °C | — |
| Maximum Allowable Service Temperature in Air - Continuous | -260 | °C | — |
Table 5 of 5
3 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Surface Resistivity (23°C, RH 50%) | min. 10^7 | Ohm | D257 |
| Surface Resistivity (23°C, 50% RH) | min. 10^7 | Ohm | D257 |
| Volume Resistivity (23°C) | min. 10^3 | Ohm-cm | D257 |
