Home | Phenolic Flat Washers - Hard, Heat-Resistant Insulating Washers

Phenolic Flat Washers - Hard, Heat-Resistant Insulating Washers

Phenolic flat washers are made from thermoset phenolic resin, offering excellent electrical insulation, hardness, and heat resistance-making them a reliable non-metallic washer for electrical equipment, circuit boards, and industrial applications with moderate temperature exposure. Superior Washer & Gasket Corp produces phenolic washers in standard and custom sizes.

As an ISO 9001:2015 certified specialty washer manufacturer, we supply phenolic washers alongside fiberglass, Kapton, mica, and other high-performance insulating washers-all made in the U.S.A. to your precise OD, ID, and thickness requirements.

  • Thermoset phenolic for hardness and electrical insulation
  • Good heat resistance for industrial applications
  • Standard and custom phenolic washer configurations
  • ISO 9001:2015 certified manufacturing
  • Made in the U.S.A.

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Showing 51–100 of 243 products

SKU ID OD Thickness Material ID TOL OD TOL Quantity

440-144-062

ID 0.253
OD 0.687
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-145-031

ID 0.253
OD 0.562
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-146-062

ID 0.253
OD 0.625
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-147-031

ID 0.253
OD 0.687
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-148-062

ID 0.253
OD 0.75
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-149-062

ID 0.253
OD 0.812
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-15-016

ID 0.067
OD 0.125
Thickness 0.016
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-150-062

ID 0.253
OD 0.875
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-151-031

ID 0.253
OD 1.062
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-152-062

ID 0.253
OD 1.437
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-153-031

ID 0.26
OD 0.375
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-154-031

ID 0.26
OD 0.437
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-155-031

ID 0.26
OD 0.5
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-156-062

ID 0.26
OD 0.562
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-157-031

ID 0.26
OD 0.687
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-158-125

ID 0.26
OD 0.73
Thickness 0.125
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-159-031

ID 0.26
OD 0.75
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-16-016

ID 0.073
OD 0.125
Thickness 0.016
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-160-031

ID 0.26
OD 0.875
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-161-031

ID 0.26
OD 1.5
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-162-031

ID 0.281
OD 0.42
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-163-031

ID 0.281
OD 0.5
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-164-062

ID 0.281
OD 0.54
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-165-062

ID 0.281
OD 0.625
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-165M-031

ID 0.282
OD 0.625
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-166-031

ID 0.281
OD 0.75
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-167-031

ID 0.312
OD 0.437
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-168-031

ID 0.312
OD 0.544
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-169-062

ID 0.312
OD 1.0
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-17-016

ID 0.078
OD 0.156
Thickness 0.016
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-170-062

ID 0.312
OD 1.25
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-171-031

ID 0.317
OD 0.5
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-172-031

ID 0.317
OD 0.515
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-173-031

ID 0.317
OD 0.562
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-174-031

ID 0.317
OD 0.6
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-175-031

ID 0.317
OD 0.625
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-176-062

ID 0.317
OD 0.687
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-177-031

ID 0.317
OD 0.75
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-178-062

ID 0.328
OD 0.562
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-178M-062

ID 0.328
OD 0.569
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-179-031

ID 0.375
OD 0.5
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-18-031

ID 0.078
OD 0.187
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-180-045

ID 0.375
OD 0.656
Thickness 0.045
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-181-031

ID 0.375
OD 0.875
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-182-062

ID 0.375
OD 1.0
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-183-062

ID 0.385
OD 0.5
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-184-031

ID 0.385
OD 0.625
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-185-062

ID 0.385
OD 0.687
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-186-031

ID 0.385
OD 0.75
Thickness 0.031
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity

440-187-062

ID 0.385
OD 1.0
Thickness 0.062
Material Phenolic
ID TOL +-.005
OD TOL +-.005
Quantity