Efalon® Carbon-filled K-25

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.

Brand: Efalon (7 products)

Polymer Name: Polytetrafluoroethylene (PTFE)

Reinforcement Material: Carbon Fibers

Physical Form: Rods, Sheets, Tube

Density: 2050.0 - 2150.0 kg/m³

Features: Corrosion Resistant, Excellent Mechanical Strength, Low Deformation Tendency, Low Thermal Expansion, Thermally Insulating, Wear Resistant

Technical Data Sheet

Enhanced TDS

Knowde-enriched technical product data sheet

Identification & Functionality

Chemical Family: Fluoropolymers
Fillers Included: Carbon Fiber
Polymer Name: Polytetrafluoroethylene (PTFE)
Reinforcement Material: Carbon Fibers
Technologies: Composite Materials,
Plastics
Product Families: Composite Materials — Parts & Shapes
Plastics — Parts, Shapes & Films

Features & Benefits

Materials Features

Corrosion Resistant,

Excellent Mechanical Strength,

Low Deformation Tendency,

Low Thermal Expansion,

Thermally Insulating,

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

Applications & Uses

Markets: Industrial
Applications: Industrial — Chemical & Industrial Manufacturing
Equipment & Parts,
Other Industrial Applications
Plastics & Elastomers End Uses: Bearings,
Gaskets,
Piston Rings

Properties

Physical Form

Mechanical Properties


	Value	Units	Test Method / Conditions
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	%	-

Physical Properties


	Value	Units	Test Method / Conditions
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	-

Typical Properties


	Value	Units	Test Method / Conditions
Density (23°C)	2.05 - 2.15	g/cm³	D792

Thermal Properties


	Value	Units	Test Method / Conditions
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	-

Electrical Properties


	Value	Units	Test Method / Conditions
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