Ceramic Washers

Du-Co Ceramics manufactures precision ceramic washers, also known as ceramic discs or ceramic flat washers, in a variety of standard sizes and custom configurations. Manufactured from steatite ceramic and alumina ceramic materials, these fully dense ceramic washers provide excellent electrical insulation, wear resistance, corrosion resistance, and high-temperature performance. Ceramic washers are commonly used in electrical, industrial, and high-temperature applications where metal washers may corrode, conduct electricity, or deteriorate over time.

Steatite Ceramic Washers steatite ceramic washers

Click on dimension header to list by size

Part No.  ↑ OD  ↓ ID  ↓ Length  ↓
AW-0108 0.563 0.267 0.105
AW-0186 0.312 0.156 0.250
AW-0225 0.312 0.190 0.100
AW-0229 1.184 0.264 0.574
AW-0230 1.250 0.187 0.312
AW-0231 1.500 0.375 0.625
AW-0279 0.562 0.228 0.164
AW-0285 0.370 0.150 0.085
AW-0309 0.276 0.169 0.460
AW-0315 0.500 0.381 0.250
AW-0318 0.312 0.170 0.040
AW-0320 0.220 0.140 0.125
AW-0329 0.250 0.187 0.125
AW-0332 0.437 0.260 0.171
AW-0333 0.328 0.125 0.093
AW-0404 0.250 0.145 0.055
AW-0416 0.187 0.094 0.125
AW-0418 0.540 0.234 0.140
Part No. OD ID Length
AW-0422 0.625 0.200 0.060
AW-0424 0.437 0.130 0.093
AW-0443 0.437 0.250 0.250
AW-0444 0.430 0.185 0.125
AW-0445 0.250 0.125 0.187
AW-0454 0.372 0.209 0.042
AW-0512 0.250 0.093 0.187
AW-0538 0.147 0.056 0.156
AW-0539 0.500 0.187 0.250
AW-0547 0.284 0.161 0.207
AW-0574 0.575 0.080 0.093
AW-0580 0.286 0.142 0.220
AW-0606 0.375 0.188 0.140
AW-0608 0.493 0.145 0.075
AW-0626 0.485 0.203 0.312
AW-0641 1.172 0.500 0.187
AW-0674 0.750 0.203 0.250
AW-0683 0.270 0.110 0.093
AW-0799 0.250 0.105 0.210
AW-0800 0.625 0.144 0.375
AW-0809-1 0.175 0.130 0.065
AW-0810 0.310 0.125 0.132
AW-0818 0.562 0.250 0.375
AW-0819 0.562 0.375 0.375
AW-0820 1.100 0.795 0.250
AW-0833 0.150 0.100 0.025
AW-0858 0.375 0.125 0.070
AW-0920 0.490 0.168 0.125
AW-0929 0.305 0.114 0.312
AW-1020 0.375 0.098 0.250
AW-1128 2.156 1.031 0.218
AW-1139 0.375 0.260 0.090
AW-1141 0.180 0.072 0.168
AW-1182 0.562 0.232 0.100
Part No. OD ID Length
AW-1203 0.281 0.171 0.217
AW-1204 0.120 0.073 0.060
AW-1222 0.500 0.265 0.093
AW-1286 0.250 0.098 0.156
AW-1299 0.563 0.266 0.410
AW-1318 0.335 0.160 0.045
AW-1344 0.822 0.234 0.032
AW-1355 0.272 0.082 0.062
AW-1387 0.457 0.087 0.100
AW-1401 0.625 0.203 0.187
AW-1444 0.156 0.108 0.100
AW-1448 0.284 0.130 0.035
AW-1470 0.540 0.235 0.070
AW-1471-1 0.312 0.093 0.200
AW-1476 0.180 0.069 0.101
AW-1478 0.305 0.140 0.375
AW-1484 0.500 0.210 0.100
AW-1486 1.015 0.250 0.094
AW-1488 0.570 0.470 0.335
AW-1498 0.370 0.215 0.225
AW-1507 0.293 0.170 0.216
AW-1518 0.230 0.115 0.187
AW-1526 0.484 0.203 0.500
AW-1550 0.125 0.041 0.085
AW-1586 0.250 0.149 0.103
AW-1607 0.500 0.255 0.187
AW-1633 0.490 0.234 0.125
AW-1634 0.310 0.203 0.125
AW-1643 0.445 0.195 0.250
AW-1666 0.240 0.130 0.250
AW-1667 0.100 0.035 0.035
AW-1668 0.192 0.125 0.080
AW-1672 0.546 0.237 0.055
AW-1686 0.540 0.340 0.075
AW-1688 0.266 0.125 0.030
AW-1715 1.000 0.656 0.250
AW-1751 0.187 0.120 0.177
AW-1823 0.625 0.131 0.187
AW-1825 0.390 0.155 0.093
AW-1827 0.152 0.053 0.062
AW-1856 0.375 0.185 0.125
AW-1873 0.313 0.170 0.150
AW-1894 0.288 0.049 0.055
AW-1897 0.165 0.049 0.055
AW-1907 0.625 0.406 0.125
AW-1908 0.205 0.080 0.030
AW-1948 0.593 0.462 0.370
AW-1997 0.298 0.110 0.062
AW-2012 0.250 0.135 0.250
AW-2036 0.620 0.360 0.090
Part No. OD ID Length
AW-2078 0.500 0.317 0.125
AW-2091 0.230 0.145 0.175
AW-2094 0.080 0.034 0.020
AW-2108 0.281 0.093 0.218
AW-2110 0.180 0.103 0.160
AW-2129 0.620 0.375 0.225
AW-2130 1.250 0.235 0.125
AW-2131 1.250 0.270 0.125
AW-2163 0.360 0.100 0.062
AW-2164 0.420 0.174 0.125
AW-2203 0.270 0.067 0.078
AW-2206 0.530 0.227 0.096
AW-2217 0.375 0.205 0.312
AW-2291 0.550 0.300 0.062
AW-2296 0.222 0.046 0.062
AW-2313 0.750 0.312 0.250
AW-2322 0.457 0.136 0.090
AW-2345 0.648 0.187 0.156
AW-2364 0.312 0.145 0.023
AW-2365 0.258 0.041 0.075
AW-2381 0.485 0.203 0.250
AW-2382 0.425 0.190 0.250
AW-2404 0.175 0.125 0.100
AW-2415 1.000 0.531 0.042
AW-2417 0.375 0.073 0.125
AW-2422 0.495 0.141 0.325
AW-2431 0.380 0.195 0.080
AW-2438 1.385 0.257 0.125
AW-2440 0.125 0.050 0.100
AW-2463 1.260 0.225 0.125
AW-2472 0.875 0.626 0.093
AW-2482 0.151 0.113 0.065
AW-2497 0.220 0.085 0.094
AW-2508 0.405 0.190 0.150
AW-2510 0.409 0.325 0.250
AW-2512 0.310 0.210 0.328
AW-2700 1.000 0.193 0.125
Part No. OD ID Length
AW-2821 0.250 0.095 0.187
AW-2822 0.312 0.130 0.250
AW-3267 0.859 0.550 0.220
AW-3486 1.687 0.562 0.250
AW-3487 1.062 0.437 0.250
AW-3718 0.750 0.195 0.375
AW-3804 1.062 0.562 0.250
AW-3808 0.250 0.079 0.023
AW-3833 1.000 0.439 0.250
AW-3933 0.335 0.145 0.093
AW-3961 0.617 0.255 0.125
AW-4157 1.687 0.750 0.250
AW-4201 0.559 0.387 0.167
AW-4513 0.370 0.130 0.257
AW-4527 0.485 0.195 0.257
AW-4586 0.425 0.195 0.257
This information is for design guidance only. Du-Co Ceramics Company will not guarantee this information as absolute values. Various geometries can affect properties.

These items are standard tooling.  In some cases the tooling can be adjusted to increase the thickness of the part.

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Benefits of Ceramic Washers

  • Excellent electrical insulation properties
  • High dielectric strength
  • Corrosion resistance
  • High-temperature performance
  • Wear resistance
  • Long service life
  • Available in steatite and alumina materials
  • Standard and custom configurations available

Steatite and alumina ceramic washers are widely used because they resist rust, aging, and environmental degradation while providing dependable electrical performance.

Need a Ceramic Washer for Your Application?

Du-Co Ceramics manufactures precision steatite and alumina ceramic washers in a wide range of standard sizes and can produce custom dimensions to meet your specific requirements. Whether you need electrical insulation, corrosion resistance, or high-temperature performance, our team can help identify the right ceramic washer solution for your application. Contact us today to discuss your requirements or request a quote.