PEEK Washer

The PEEK Washer is part of Goodfellow's extensive range of bolts, offering 23 variations. Polyether ether ketone (PEEK) is a semi-crystalline thermoplastic with excellent mechanical and chemical resistance properties. With high strength and stiffness even at elevated temperatures, PEEK washers maintain high performance in demanding applications like valves, pumps, and electrical insulators. The range caters to diverse engineering needs, from chemical processing to aerospace.

Formula: PEEK
Thickness: 1.6mm
Outside Diameter: 17
Inside Diameter: 8.40
Quantity: 5 Pcs
Size: M8
CAS Number: 29658-26-2
UOM Code: 572-910-80
Legacy Code: EK30WA08
Distributor Code: GF57291080

SKU: 1000076693

Product Code: EK30-WA-000108

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Washer

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Washer

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Technical Data Sheet

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Safety Data Sheet

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Material Properties for Polymers

Chemical Resistance

Element	Value
Acids - concentrated	Good-Poor
Acids - dilute	Good
Alcohols	Good
Alkalis	Good
Aromatic hydrocarbons	Good
Greases and Oils	Good
Halogenated Hydrocarbons	Good
Halogens	Good-Poor
Ketones	Good-Poor

Mechanical Properties

Element	Value
Coefficient of friction	0.18
Hardness - Rockwell	M99
Poisson's ratio	0.4
Elongation at break( % )	50
Tensile modulus( GPa )	3.7-4
Izod impact strength( J m⁻¹ )	85
Tensile strength( MPa )	70-100

Electrical Properties

Element	Value
Dielectric constant @1kHz	3.2-3.3@50Hz-10Khz
Dissipation factor @ 1MHz	0.003
Dielectric strength( kV mm⁻¹ )	190@50µm
Volume resistivity( Ohmcm )	10¹⁵-10¹⁶

Physical Properties

Element	Value
Flammability	V-0 @ 1.5mm
Radiation resistance	Good
Resistance to Ultra-violet	Fair
Limiting oxygen index( % )	35
Water absorption - equilibrium( % )	0.5
Water absorption - over 24 hours( % )	0.1-0.3
Density( gcm⁻³ )	1.26-1.32

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	260
Heat-deflection temperature - 1.8MPa( C )	160
Upper working temperature( C )	250
Specific heat( J K⁻¹ kg⁻¹ )	1340
Thermal conductivity( W m⁻¹ K⁻¹ )	0.25@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	47-108