Home | Fiberglass Flat Washers - High-Temperature Electrical Insulation Washers

Fiberglass Flat Washers - High-Temperature Electrical Insulation Washers

Fiberglass flat washers provide excellent electrical insulation, high-temperature resistance, and mechanical strength for demanding applications in electrical equipment, aerospace, and industrial machinery. Superior Washer & Gasket Corp manufactures fiberglass washers from G10/FR4 and other glass-reinforced plastic materials in standard and custom sizes.

Our ISO 9001:2015 certified facility produces fiberglass plastic washers alongside phenolic, Kapton, mica, and other high-performance insulating washers-all made in the U.S.A. to your exact dimensional requirements and tolerances.

  • Excellent electrical insulation and high-temperature resistance
  • G10/FR4 and glass-reinforced plastic materials
  • Standard and custom fiberglass washer sizes
  • ISO 9001:2015 certified quality control
  • Made in the U.S.A.

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Showing 1–22 of 22 products

SKU ID OD Thickness Material ID TOL OD TOL Quantity

330-223-061

ID 0.171
OD 0.688
Thickness 0.061
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

330-224-015

ID 0.098
OD 0.155
Thickness 0.015
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

330-226-031

ID 0.313
OD 0.748
Thickness 0.031
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-10-015

ID 0.094
OD 0.25
Thickness 0.015
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-11-015

ID 0.122
OD 0.218
Thickness 0.015
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-12-031

ID 0.125
OD 0.31
Thickness 0.031
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-13-062

ID 0.125
OD 0.317
Thickness 0.062
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-14-062

ID 0.125
OD 0.5
Thickness 0.062
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-15-031

ID 0.142
OD 0.38
Thickness 0.031
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-16-062

ID 0.178
OD 0.562
Thickness 0.062
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-17-062

ID 0.203
OD 0.443
Thickness 0.062
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-18-031

ID 0.25
OD 0.5
Thickness 0.031
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-19-062

ID 0.312
OD 0.562
Thickness 0.062
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-20-062

ID 0.38
OD 0.75
Thickness 0.062
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-21-062

ID 0.515
OD 0.88
Thickness 0.062
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-22-093

ID 0.64
OD 1.193
Thickness 0.093
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-23-093

ID 0.765
OD 1.317
Thickness 0.093
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-24-093

ID 1.015
OD 1.755
Thickness 0.093
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-25-125

ID 0.25
OD 2.0
Thickness 0.125
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-26-125

ID 0.375
OD 2.0
Thickness 0.125
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-27-125

ID 0.5
OD 2.0
Thickness 0.125
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity

450-28-125

ID 0.625
OD 2.0
Thickness 0.125
Material Fiberglass
ID TOL +-.005
OD TOL +-.005
Quantity