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PPC CERAMIC® (ZrO₂)

Ceramic (Zirconia ZrO₂) Flat Washer - ISO 7089

In stock
SKU: CERZIWAM3
$12.30

Our zirconia ceramic flat washers (ZrO₂) provide a hard, corrosion-resistant bearing surface for metric screws, bolts, and nuts. Featuring ISO 7089 dimensions, these washers help distribute clamping loads across a wider area and protect the surface beneath the fastener.

Made from zirconium dioxide, these metric ceramic washers combine high hardness and wear resistance with electrical insulation and low thermal conductivity. They offer a practical alternative to metal washers in assemblies requiring electrical isolation, reduced heat transfer, or resistance to chemical exposure.

Key Features

  • Zirconia ceramic construction: Hard, wear-resistant material for demanding industrial applications.
  • ISO 7089 dimensions: Normal-series flat washer geometry for compatible metric fasteners.
  • Load distribution: Spreads clamping force over a wider bearing surface.
  • Electrical insulation: Helps isolate the fastener’s bearing surface from adjacent components.
  • Corrosion resistance: Suitable for many chemically exposed environments, subject to material compatibility.
  • Low thermal conductivity: Helps limit heat transfer through the washer.
  • Type Washers
  • SKU CERZIWAM3
  • Material Ceramic ZrO2
  • Color
    • White
  • Measurement System Metric
  • ISO Standard ISO 7089
  • DIN Standard DIN 125 A

Material: Ceramic (Zirconia ZrO₂)

Continuous Maximum Temperature: 2192ºF

Flammability: Non-combustible

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Flat Washer Dimension Table (ISO7089/DIN125A)
M Size Inside Diameter (mm) Outside Diameter (mm) Thickness (mm)
M1.6 1.7 3.7 0.25
M2 2.1 4.0 0.5
M2.6 2.7 6.0 0.5
M3 3.2 7.0 0.5
M4 4.3 9.0 0.8
M5 5.3 10.0 1.0
M6 6.4 12.5 1.6
M8 8.4 17.0 1.6
M10 10.5 21.0 2.0
M12 13.0 24.0 2.5
M16 17.0 30.0 3.0
M20 21.0 37.0 3.0

Ceramic (Zirconia ZrO₂)

Key Properties & Applications
Properties Applications

- Exceptional Flexural Strength
- Outstanding Wear & Abrasion Resistance
- High Melting Point
- Excellent Resistance to Acids & Alkalis

- Valve Seats & Valve Components
- Medical & Dental Devices
- Aerospace Components
- Bearing Components

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