Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Fillers Included
- Polymer Name
- Reinforcement Material
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Key Benefits
- Wear resistant
- Higher coefficient of friction
- Improved hardness
- Abrasive filler unsuitable for some applications
- Lower thermal expansion
- Resistance to gas permeation is reduced
- Lower deformation under load
- Non-conductive
- Products Features
- Improves creep resistance, both at low and high temperatures
- Chemically stable (except for strong alkalis and hydrofluoric acid (HF))
- Little effect on the electrical properties of PTFE, and improves wear and friction behavior
PTFE Glass filled is very commonly used in valve seat applications. Increased compressive strength and creep resistance of the material allow much greater pressure on the valve seat and as such a much higher rated valve.
Applications & Uses
- Markets
- Applications
- Plastics & Elastomers End Uses
- Applications
- Pump housings
- Pump and instrument construction
- Valve seats and sealing applications
- Electrical industry
- Gaskets
- Electronics
- Roller coverings
- Laser technology
- Shaft bearings
- Fume purification
- Filter housings
- Pure water production
- Etching plates
- Cryogenics
- Shaft seals
- Filter technology
- Slide runners
- Food and medical technology
- Chemical engineering
- Machine parts
- Transport and conveyor technology
Properties
- Physical Form
- Mechanical Properties
Value Units Test Method / Conditions Density (23°C) 2.15 - 2.25 g/cm³ D792 Tensile Strength at Break 175 - 260 Kg/cm² D638 Compressive Stress (%1 Deformation, 23°C) 60 - 65 Kg/cm² D695 Total Deformation 11 - 15 % D621 Permanent Deformation 6 - 8 % D621 Elongation at Break (23°C) 250 - 280 % D638 Hardness 60 - 64 Shore D D2240 Impact Resistance (Izod, Notched) 14 - 15.5 Kj/m² D256 Total Deformation Under Weight (10 kg/cm² Load, 150°C, 24 hours) 2.8 - 3 % - Total Deformation Under Weight (50 kg/cm² Load, 150°C, 24 hours) 18 - 19 % - - Physical Properties
Value Units Test Method / Conditions Coefficient of Friction (Static) 0.05 - - Coefficient of Friction (Dynamic) 0.06 - - PV Limits (3 m/min) 210 - 215 kg.cm³.min - PV Limits (30 m/min) 250 - 270 kg.cm³.min - - Thermal Properties
Value Units Test Method / Conditions Coefficient of Linear Thermal Expansion (25°C-100°C, [x10^-5]) 12 - 14.5 °C-1 D696 Coefficient of Linear Thermal Expansion (25°C-100°C, [x10^-5]) 9 - 16 °C-1 D696 Coefficient of Linear Thermal Expansion (25°C-100°C, [x10^-5]) 15 - 18 °C-1 D696 Heat Conductivity (30°C, [x10^-4]) 8 - 9 Cal/cm.sn.°C - Maximum Allowable Service Temperature in Air - Continuous 270 °C - Maximum Allowable Service Temperature in Air - Continuous -260 °C - PV Limits (300 m/min) 310 - 320 kg.cm³.min - - Typical Properties
Value Units Test Method / Conditions Density (23°C) 2.15 - 2.25 g/cm³ D792 - Electrical Properties
Value Units Test Method / Conditions Surface Resistivity (23°C, RH 50%) min. 10^15 Ohm D257 Dielectric Loss Factor Dry (50 Hz, 23°C) 0.00075 - D150 Electric Strength Shortterm (0.1 mm) 16 - 19 Kv/mm D149 Relative Permittivitiy (50Hz-107Hz) 2.3 - 2.5 - D150 Surface Resistivity (23°C, 50% RH) min. 10^15 Ohm D257 Volume Resistivity (23°C) min. 10^13 Ohm-cm D257