ID ID |
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OD OD |
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Material Material |
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Thickness Thickness |
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Dash Number Dash Number |
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Hardness Hardness |
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For Use With For Use With |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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About O-Rings
More
About Washers
More
Washers for Blind Rivets
Also known as backup washers, these are for use with blind rivets for extra support when fastening into soft material.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
Zinc-plated steel washers are corrosion resistant in wet environments.
Aluminum washers are lightweight and corrosion resistant in wet environments.
For technical drawings and 3-D models, click on a part number.
| For Rivet Dia. | ID | OD | Thick. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||
|---|---|---|---|---|---|---|
| 3/32" | 0.098" | 0.312" | 0.058"-0.068" | 50 | 000000000 | 000000 |
| 1/8" | 0.134" | 0.375" | 0.057"-0.067" | 100 | 000000000 | 0000 |
| 5/32" | 0.161" | 0.438" | 0.058"-0.068" | 50 | 000000000 | 00000 |
| 3/16" | 0.192" | 0.375" | 0.058"-0.068" | 50 | 000000000 | 00000 |
| 3/16" | 0.197" | 0.500" | 0.057"-0.067" | 100 | 000000000 | 0000 |
| 1/4" | 0.256" | 0.500" | 0.058"-0.068" | 50 | 000000000 | 00000 |
Zinc-Plated Steel | ||||||
| 3/32" | 0.098" | 0.312" | 0.058"-0.068" | 100 | 000000000 | 00000 |
| 1/8" | 0.134" | 0.375" | 0.057"-0.067" | 500 | 000000000 | 00000 |
| 5/32" | 0.165" | 0.438" | 0.057"-0.067" | 250 | 000000000 | 0000 |
| 3/16" | 0.192" | 0.375" | 0.055"-0.065" | 250 | 000000000 | 00000 |
| 3/16" | 0.197" | 0.500" | 0.057"-0.067" | 250 | 000000000 | 0000 |
| 1/4" | 0.256" | 0.500" | 0.056"-0.062" | 250 | 000000000 | 00000 |
Aluminum | ||||||
| 3/32" | 0.098" | 0.312" | 0.058"-0.068" | 100 | 000000000 | 00000 |
| 1/8" | 0.134" | 0.375" | 0.057"-0.067" | 500 | 000000000 | 00000 |
| 5/32" | 0.165" | 0.438" | 0.057"-0.067" | 250 | 000000000 | 00000 |
| 3/16" | 0.192" | 0.375" | 0.055"-0.065" | 250 | 000000000 | 00000 |
| 3/16" | 0.197" | 0.500" | 0.057"-0.067" | 250 | 000000000 | 00000 |
| 1/4" | 0.256" | 0.500" | 0.056"-0.062" | 100 | 000000000 | 0000 |
Square Washers for Blind Rivets
Also known as backup washers, these square washers are for use with blind rivets for extra support when fastening into soft material. They fit into slots and channels and have flat sides to keep them from rotating. They are wider and thicker than most round washers, making them good for distributing heavy loads. They are zinc-plated steel for corrosion resistance in wet environments.
For technical drawings and 3-D models, click on a part number.
Oil-Resistant Buna-N Backup Rings
Made of Buna-N, these backup rings resist grease, petroleum fluids, and motor oil. Use them to extend the life of your O-rings and improve their performance in high-pressure applications.
For technical drawings and 3-D models, click on a part number.
| For Dash Number | ID | OD | Thick. | Hardness | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
0.053" Wide | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 004 | 0.096" | 0.202" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 00000 |
| 005 | 0.127" | 0.233" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 006 | 0.140" | 0.246" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 007 | 0.171" | 0.277" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 008 | 0.202" | 0.308" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 009 | 0.234" | 0.340" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 010 | 0.265" | 0.371" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 011 | 0.327" | 0.433" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 012 | 0.390" | 0.496" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 013 | 0.455" | 0.561" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 014 | 0.518" | 0.624" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 015 | 0.580" | 0.686" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 016 | 0.643" | 0.749" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 017 | 0.705" | 0.811" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 018 | 0.768" | 0.874" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 019 | 0.830" | 0.936" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 020 | 0.893" | 0.999" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 021 | 0.955" | 1.061" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 022 | 1.018" | 1.124" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 024 | 1.143" | 1.249" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 025 | 1.205" | 1.311" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 026 | 1.268" | 1.374" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 028 | 1.393" | 1.499" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 029 | 1.518" | 1.624" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 031 | 1.768" | 1.874" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 00000 |
| 042 | 3.268" | 3.374" | 0.049" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
0.086" Wide | |||||||||
| 103 | 0.109" | 0.281" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 109 | 0.327" | 0.499" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 110 | 0.390" | 0.562" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 111 | 0.452" | 0.624" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 112 | 0.515" | 0.687" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 113 | 0.577" | 0.749" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 114 | 0.640" | 0.812" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 115 | 0.702" | 0.874" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 116 | 0.765" | 0.937" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 117 | 0.831" | 1.003" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 118 | 0.893" | 1.065" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 119 | 0.956" | 1.128" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 120 | 1.018" | 1.190" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 121 | 1.081" | 1.253" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 124 | 1.268" | 1.440" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 125 | 1.331" | 1.503" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 126 | 1.393" | 1.565" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 128 | 1.518" | 1.690" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 130 | 1.643" | 1.815" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 131 | 1.706" | 1.878" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 00000 |
| 132 | 1.768" | 1.940" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 00000 |
| 134 | 1.893" | 2.065" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 00000 |
| 135 | 1.956" | 2.128" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 00000 |
| 136 | 2.018" | 2.190" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 137 | 2.081" | 2.253" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 141 | 2.331" | 2.503" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 152 | 3.268" | 3.440" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 154 | 3.768" | 3.940" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 155 | 4.018" | 4.190" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 0000000 | 0000 |
| 158 | 4.768" | 4.940" | 0.053" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
0.118" Wide | |||||||||
| 202 | 0.265" | 0.501" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 203 | 0.327" | 0.563" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 204 | 0.390" | 0.626" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 206 | 0.518" | 0.754" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 207 | 0.580" | 0.816" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 208 | 0.643" | 0.879" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 210 | 0.766" | 1.002" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 211 | 0.828" | 1.064" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 212 | 0.891" | 1.127" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 214 | 1.016" | 1.252" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 216 | 1.141" | 1.377" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 217 | 1.203" | 1.439" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 0000000 | 0000 |
| 218 | 1.266" | 1.502" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 100 | 00000000 | 0000 |
| 220 | 1.397" | 1.633" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 222 | 1.522" | 1.758" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 223 | 1.647" | 1.833" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 224 | 1.772" | 2.008" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 225 | 1.897" | 2.133" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 226 | 2.022" | 2.258" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 227 | 2.147" | 2.383" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 0000000 | 0000 |
| 228 | 2.272" | 2.508" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 229 | 2.397" | 2.633" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 230 | 2.522" | 2.758" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 231 | 2.631" | 2.867" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 232 | 2.756" | 2.992" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 233 | 2.881" | 3.117" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 234 | 3.006" | 3.242" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 235 | 3.131" | 3.367" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 236 | 3.256" | 3.492" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 237 | 3.381" | 3.617" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 0000000 | 0000 |
| 238 | 3.506" | 3.742" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 239 | 3.631" | 3.867" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 240 | 3.756" | 3.992" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 241 | 3.881" | 4.117" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 242 | 4.006" | 4.242" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 243 | 4.131" | 4.367" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 244 | 4.256" | 4.492" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 245 | 4.381" | 4.617" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 246 | 4.506" | 4.742" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 247 | 4.631" | 4.867" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 0000000 | 00000 |
| 248 | 4.768" | 5.004" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 249 | 4.893" | 5.129" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 250 | 5.018" | 5.254" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 252 | 5.268" | 5.504" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 254 | 5.518" | 5.754" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 255 | 5.643" | 5.879" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 256 | 5.768" | 6.004" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 257 | 5.893" | 6.129" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 0000000 | 0000 |
| 258 | 6.018" | 6.254" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 259 | 6.268" | 6.504" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 260 | 6.518" | 6.754" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 261 | 6.768" | 7.004" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 262 | 7.018" | 7.254" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 265 | 7.768" | 8.004" | 0.05" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 00000 |
0.183" Wide | |||||||||
| 322 | 1.263" | 1.629" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 323 | 1.316" | 1.682" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 325 | 1.513" | 1.879" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 326 | 1.638" | 2.004" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 0000 |
| 329 | 2.013" | 2.379" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 330 | 2.138" | 2.504" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 333 | 2.518" | 2.884" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 334 | 2.643" | 3.009" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 50 | 00000000 | 00000 |
| 337 | 3.018" | 3.384" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 0000 |
| 338 | 3.143" | 3.509" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 339 | 3.273" | 3.639" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 340 | 3.398" | 3.764" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 341 | 3.523" | 3.889" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 0000000 | 00000 |
| 342 | 3.648" | 4.014" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 343 | 3.773" | 4.139" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 344 | 3.898" | 4.264" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 345 | 4.028" | 4.394" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 346 | 4.153" | 4.519" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 25 | 00000000 | 00000 |
| 349 | 4.528" | 4.894" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 351 | 4.778" | 5.144" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 0000000 | 0000 |
| 358 | 5.653" | 6.019" | 0.076" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
0.236" Wide | |||||||||
| 426 | 4.676" | 5.148" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 427 | 4.801" | 5.273" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 0000 |
| 429 | 5.051" | 5.523" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 00000 |
| 433 | 5.551" | 6.023" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 00000 |
| 437 | 6.051" | 6.523" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 00000 |
| 439 | 6.524" | 6.996" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 00000 |
| 443 | 7.524" | 7.996" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 10 | 00000000 | 00000 |
| 446 | 8.524" | 8.996" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 5 | 00000000 | 0000 |
| 451 | 11.024" | 11.496" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 5 | 00000000 | 00000 |
| 452 | 11.524" | 11.996" | 0.117" | Durometer 90A (Hard) | -40° to 250° | Black | 5 | 00000000 | 00000 |
Ultra-Chemical-Resistant PTFE Backup Rings
These PTFE backup rings resist harsh chemicals, such as acetone, fluorinated solvents, methanol, and many acids. Use them to extend the life of your O-rings and improve their performance in high-pressure applications.
For technical drawings and 3-D models, click on a part number.
| For Dash Number | Thick. | ID | OD | Hardness | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
0.053" Wide | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 005 | 0.049" | 0.124" | 0.230" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 000000 |
| 006 | 0.049" | 0.140" | 0.246" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 007 | 0.049" | 0.171" | 0.277" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 008 | 0.049" | 0.202" | 0.308" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 009 | 0.049" | 0.234" | 0.340" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 010 | 0.049" | 0.265" | 0.371" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 011 | 0.049" | 0.327" | 0.433" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 012 | 0.049" | 0.390" | 0.496" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 013 | 0.049" | 0.455" | 0.561" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 014 | 0.049" | 0.518" | 0.624" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 015 | 0.049" | 0.580" | 0.686" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 016 | 0.049" | 0.643" | 0.749" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 017 | 0.049" | 0.705" | 0.811" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 018 | 0.049" | 0.768" | 0.874" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 019 | 0.049" | 0.801" | 0.907" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 00000000 | 00000 |
| 020 | 0.049" | 0.864" | 0.970" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 00000000 | 00000 |
| 021 | 0.049" | 0.926" | 1.032" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 00000000 | 00000 |
| 022 | 0.049" | 0.989" | 1.095" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 00000000 | 00000 |
| 024 | 0.049" | 1.114" | 1.220" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 00000000 | 00000 |
| 025 | 0.049" | 1.176" | 1.282" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 00000000 | 00000 |
| 026 | 0.049" | 1.239" | 1.345" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 00000000 | 00000 |
| 028 | 0.049" | 1.364" | 1.470" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 00000000 | 00000 |
| 029 | 0.049" | 1.489" | 1.595" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 00000000 | 00000 |
| 031 | 0.049" | 1.739" | 1.845" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 00000000 | 0000 |
0.086" Wide | |||||||||
| 109 | 0.049" | 0.299" | 0.471" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 00000000 | 00000 |
| 110 | 0.049" | 0.390" | 0.562" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 111 | 0.049" | 0.452" | 0.624" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 112 | 0.049" | 0.515" | 0.687" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 113 | 0.049" | 0.577" | 0.749" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 114 | 0.049" | 0.640" | 0.812" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 115 | 0.049" | 0.702" | 0.874" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 116 | 0.049" | 0.765" | 0.937" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 117 | 0.049" | 0.832" | 1.004" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 118 | 0.049" | 0.895" | 1.067" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 119 | 0.049" | 0.957" | 1.129" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 120 | 0.049" | 1.020" | 1.192" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 121 | 0.049" | 1.082" | 1.254" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 124 | 0.049" | 1.237" | 1.409" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 00000000 | 00000 |
| 125 | 0.049" | 1.299" | 1.471" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 00000000 | 00000 |
| 126 | 0.049" | 1.362" | 1.534" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 00000000 | 00000 |
| 128 | 0.049" | 1.487" | 1.659" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 00000000 | 00000 |
| 130 | 0.049" | 1.612" | 1.784" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 00000000 | 00000 |
| 133 | 0.049" | 1.834" | 2.006" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 00000000 | 00000 |
| 134 | 0.049" | 1.862" | 2.034" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 00000000 | 00000 |
| 137 | 0.049" | 2.050" | 2.222" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 0000 |
| 141 | 0.049" | 2.300" | 2.472" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 0000000 | 0000 |
| 152 | 0.049" | 3.237" | 3.409" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 158 | 0.049" | 4.737" | 4.909" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 0000 |
0.119" Wide | |||||||||
| 208 | 0.049" | 0.609" | 0.847" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 00000000 | 00000 |
| 210 | 0.049" | 0.766" | 1.004" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 211 | 0.049" | 0.828" | 1.066" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 212 | 0.049" | 0.891" | 1.129" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 213 | 0.049" | 0.953" | 1.191" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 214 | 0.049" | 1.016" | 1.254" | Durometer 55D (Hard) | -300° to 500° | White | 50 | 0000000 | 00000 |
| 215 | 0.049" | 1.078" | 1.316" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 216 | 0.049" | 1.141" | 1.379" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 217 | 0.049" | 1.203" | 1.441" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 218 | 0.049" | 1.266" | 1.504" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 219 | 0.049" | 1.334" | 1.572" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 220 | 0.049" | 1.359" | 1.597" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 00000000 | 00000 |
| 222 | 0.049" | 1.522" | 1.760" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 0000000 | 00000 |
| 223 | 0.049" | 1.609" | 1.847" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 00000000 | 00000 |
| 224 | 0.049" | 1.734" | 1.972" | Durometer 55D (Hard) | -300° to 500° | White | 25 | 00000000 | 00000 |
| 225 | 0.049" | 1.859" | 2.097" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 00000000 | 00000 |
| 226 | 0.049" | 1.984" | 2.222" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 00000000 | 00000 |
| 227 | 0.049" | 2.109" | 2.347" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 00000000 | 00000 |
| 228 | 0.049" | 2.234" | 2.472" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 0000000 | 00000 |
| 229 | 0.049" | 2.359" | 2.597" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 00000000 | 00000 |
| 230 | 0.049" | 2.484" | 2.722" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 00000000 | 00000 |
| 231 | 0.049" | 2.609" | 2.847" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 00000000 | 00000 |
| 232 | 0.049" | 2.734" | 2.972" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 0000 |
| 233 | 0.049" | 2.859" | 3.097" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 234 | 0.049" | 2.984" | 3.222" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 235 | 0.049" | 3.109" | 3.347" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 236 | 0.049" | 3.234" | 3.472" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 237 | 0.049" | 3.359" | 3.597" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 238 | 0.049" | 3.484" | 3.722" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 0000000 | 00000 |
| 239 | 0.049" | 3.609" | 3.847" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 240 | 0.049" | 3.734" | 3.972" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 241 | 0.049" | 3.859" | 4.097" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 242 | 0.049" | 3.984" | 4.222" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 243 | 0.049" | 4.109" | 4.347" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 244 | 0.049" | 4.234" | 4.472" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 245 | 0.049" | 4.359" | 4.597" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 246 | 0.049" | 4.484" | 4.722" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 248 | 0.049" | 4.734" | 4.972" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 249 | 0.049" | 4.859" | 5.097" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 0000 |
| 250 | 0.049" | 4.984" | 5.222" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 0000 |
| 252 | 0.049" | 5.234" | 5.472" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 0000 |
| 254 | 0.049" | 5.484" | 5.722" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 0000 |
| 255 | 0.049" | 5.609" | 5.847" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 0000 |
| 256 | 0.049" | 5.734" | 5.972" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 0000 |
| 257 | 0.049" | 5.859" | 6.097" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 0000 |
| 258 | 0.049" | 5.984" | 6.222" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 0000 |
| 261 | 0.049" | 6.734" | 6.972" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 00000 |
| 265 | 0.049" | 7.734" | 7.972" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 0000000 | 00000 |
0.183" Wide | |||||||||
| 325 | 0.07" | 1.475" | 1.841" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 00000000 | 00000 |
| 326 | 0.07" | 1.600" | 1.966" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 00000000 | 00000 |
| 328 | 0.07" | 1.888" | 2.254" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 0000000 | 00000 |
| 329 | 0.07" | 2.013" | 2.379" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 0000000 | 00000 |
| 330 | 0.07" | 2.138" | 2.504" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 0000000 | 00000 |
| 333 | 0.07" | 2.475" | 2.841" | Durometer 55D (Hard) | -300° to 500° | White | 10 | 00000000 | 00000 |
| 334 | 0.07" | 2.600" | 2.966" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 337 | 0.07" | 2.975" | 3.341" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 338 | 0.07" | 3.100" | 3.466" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 339 | 0.07" | 3.225" | 3.591" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 340 | 0.07" | 3.350" | 3.716" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 341 | 0.07" | 3.475" | 3.841" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 342 | 0.07" | 3.600" | 3.966" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 0000000 | 00000 |
| 344 | 0.07" | 3.850" | 4.216" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 345 | 0.07" | 3.975" | 4.341" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 346 | 0.07" | 4.100" | 4.466" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 349 | 0.07" | 4.475" | 4.841" | Durometer 55D (Hard) | -300° to 500° | White | 5 | 00000000 | 00000 |
| 358 | 0.07" | 5.600" | 5.966" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 0000 |
0.236" Wide | |||||||||
| 426 | 0.108" | 4.600" | 5.072" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 0000 |
| 429 | 0.108" | 4.975" | 5.447" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 0000 |
| 433 | 0.108" | 5.475" | 5.947" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 00000 |
| 439 | 0.108" | 6.475" | 6.947" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 00000 |
| 443 | 0.108" | 7.475" | 7.947" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 0000000 | 00000 |
| 446 | 0.108" | 8.475" | 8.947" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 00000 |
| 452 | 0.108" | 11.475" | 11.947" | Durometer 55D (Hard) | -300° to 500° | White | 1 | 00000000 | 00000 |
Backup Ring Assortments
These 325-piece assortments mean you’ll always have a backup ring on hand. Use them to extend the life of your O-rings and improve their performance in high-pressure applications. The backup rings are made of PTFE and resist harsh chemicals such as, acetone, fluorinated solvents, methanol, and many acids.
| Number of Pieces | Number of Sizes | Includes | Hardness | Temperature Range, °F | Color | Each | |
| 325 | 36 | Dash Numbers 005-018, 110-121, 210-219 | Durometer 55D (Hard) | -100° to 500° | White | 0000000 | 0000000 |