PPS Washer

PPS Washer combines high compressive strength, thermal stability, and dielectric insulation in a thin annular format suited for demanding fastening systems. Its ability to maintain integrity under continuous thermal cycling and chemical exposure makes it essential in aerospace, automotive, and power electronics. Applications include electrical insulation spacers, chemical-resistant seals, and load-distributing washers in fastening assemblies. Research explores PPS washers in stress-distribution testing, high-voltage insulation systems, and polymer-metal hybrid joints. Their washer geometry ensures consistent thickness, reliable insulation, and compatibility with standardized fastener sizes. By combining dimensional stability with resistance to creep and hydrolysis, PPS washers serve as reliable components in environments where metallic or lower-grade polymer washers fail, reinforcing their value in advanced industrial systems.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Washer

Size		See item

Material Properties for Polymers

Chemical Resistance

Element	Value
Acids - concentrated	Poor
Acids - dilute	Fair

Physical Properties

Element	Value
Flammability	V0
Water absorption - over 24 hours( % )	0.02
Density( gcm⁻³ )	1.35

Thermal Properties

Element	Value
Heat-deflection temperature - 1.8MPa( C )	104
Upper working temperature( C )	170
Thermal conductivity( W m⁻¹ K⁻¹ )	0.3 -
Thermal conductivity( W m⁻¹ K⁻¹ )	23/ - 4.0
Thermal conductivity( W m⁻¹ K⁻¹ )	0.3
Thermal conductivity( W m⁻¹ K⁻¹ )	23/
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	4