Home | Copper Flat Washers - Sealing & Conductive Washers

Copper Flat Washers - Sealing & Conductive Washers

Copper flat washers are valued for their excellent electrical conductivity, thermal performance, and natural sealing properties-making them a preferred choice for hydraulic fittings, electrical connections, and high-temperature applications. Superior Washer & Gasket Corp manufactures copper washers in standard and custom sizes from quality copper stock.

Our ISO 9001:2015 certified facility produces copper flat washers and copper sealing washers from stock inventory and to custom OD, ID, and thickness specifications. All metal washers are made in the U.S.A. with material certifications available for regulated applications.

  • Superior electrical conductivity and thermal properties
  • Excellent natural sealing performance
  • Standard and custom copper flat washer sizes
  • ISO 9001:2015 certified quality assurance
  • Made in the U.S.A.; certifications available

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Showing 1–50 of 427 products

SKU ID OD Thickness Material ID TOL OD TOL Quantity

815-10-015

ID 0.045
OD 0.101
Thickness 0.015
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-100-063

ID 0.283
OD 0.872
Thickness 0.063
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-101-023

ID 0.284
OD 0.439
Thickness 0.023
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-102-062

ID 0.284
OD 0.625
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-103-033

ID 0.284
OD 0.685
Thickness 0.033
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-104-030

ID 0.286
OD 0.498
Thickness 0.03
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-105-040

ID 0.29
OD 0.434
Thickness 0.04
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-106-040

ID 0.29
OD 0.501
Thickness 0.04
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-107-032

ID 0.312
OD 0.501
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-107-040

ID 0.312
OD 0.501
Thickness 0.04
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-108-039

ID 0.313
OD 0.45
Thickness 0.039
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-109-061

ID 0.313
OD 0.499
Thickness 0.061
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-11-030

ID 0.066
OD 0.204
Thickness 0.03
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-110-032

ID 0.314
OD 0.511
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-111-062

ID 0.314
OD 0.75
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-112-018

ID 0.315
OD 0.403
Thickness 0.018
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-113-026

ID 0.315
OD 0.451
Thickness 0.026
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-114-063

ID 0.315
OD 0.467
Thickness 0.063
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-115-032

ID 0.315
OD 0.5
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-116-051

ID 0.316
OD 0.75
Thickness 0.051
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-117-032

ID 0.317
OD 0.562
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-117-062

ID 0.317
OD 0.562
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-118-061

ID 0.317
OD 0.623
Thickness 0.061
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-119-065

ID 0.317
OD 0.687
Thickness 0.065
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-12-016

ID 0.071
OD 0.125
Thickness 0.016
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-120-019

ID 0.318
OD 0.407
Thickness 0.019
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-121-062

ID 0.321
OD 0.495
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-122-011

ID 0.329
OD 0.546
Thickness 0.011
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-123-025

ID 0.329
OD 0.564
Thickness 0.025
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-123-062

ID 0.329
OD 0.564
Thickness 0.062
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-124-032

ID 0.33
OD 0.56
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-125-009

ID 0.33
OD 0.561
Thickness 0.009
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-126-031

ID 0.331
OD 0.563
Thickness 0.031
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-127-040

ID 0.331
OD 0.622
Thickness 0.04
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-128-032

ID 0.332
OD 0.561
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-129-051

ID 0.332
OD 0.562
Thickness 0.051
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-13-019

ID 0.075
OD 0.186
Thickness 0.019
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-130-030

ID 0.344
OD 0.556
Thickness 0.03
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-131-015

ID 0.344
OD 0.56
Thickness 0.015
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-132-032

ID 0.344
OD 0.88
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-133-060

ID 0.346
OD 0.685
Thickness 0.06
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-134-031

ID 0.347
OD 0.501
Thickness 0.031
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-135-063

ID 0.347
OD 0.748
Thickness 0.063
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-136-027

ID 0.363
OD 0.563
Thickness 0.027
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-137-020

ID 0.364
OD 0.47
Thickness 0.02
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-138-063

ID 0.375
OD 0.624
Thickness 0.063
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-139-032

ID 0.376
OD 0.56
Thickness 0.032
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-14-020

ID 0.089
OD 0.131
Thickness 0.02
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-140-063

ID 0.377
OD 0.559
Thickness 0.063
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity

815-141-016

ID 0.378
OD 0.535
Thickness 0.016
Material Copper
ID TOL +-.005
OD TOL +-.005
Quantity