Cross Sections (CSD) and Tolerances
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| The charts below are for FKM cord and meet RMA standards. If you need information on any other compound, or if a tighter tolerance is required for your project, please contact us. |
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| Standard Cross Sections and Tolerances |
| Black |
Brown |
| CSD |
Tolerance |
CSD |
Tolerance |
| .070 |
+/-.004 |
.070 |
+/-.007 |
| .103 |
+/-.005 |
.103 |
+/-.008 |
| .139 |
+/-.006 |
.139 |
+/-.009 |
| .210 |
+/-.008 |
.210 |
+/-.010 |
| .275 |
+/-.010 |
.275 |
+/-.013 |
| .312 |
+/-.012 |
.312 |
+/-.014 |
| .375 |
+/-.013 |
.375 |
+/-.014 |
| .500 |
+/-.018 |
.500 |
+/-.026 |
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| Standard Cut/Length Tolerances (in inches) |
| Cut Tolerance |
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Length Tolerance |
ID Tolerance |
| 0 - 10 |
+/- |
0.13 |
0.04 |
| 10 - 16 |
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0.16 |
0.05 |
| 16 - 25 |
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0.20 |
0.06 |
| 25 - 40 |
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0.25 |
0.08 |
| 40 - 63 |
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0.32 |
0.10 |
| 63 - 100 |
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0.40 |
0.13 |
| 101 - 150 |
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0.50 |
0.16 |
| 151 - 200 |
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0.80 |
0.20 |
| 201 - 250 |
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1.00 |
0.32 |
| 251 - 300 |
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1.20 |
.038 |
| 301 + |
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(.004 X Cut Length) |
(0.0012732 X Cut) |
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ID to Cut Length
ID + 1 CS x 3.1416 = Cut Length
Cut Length to ID
CL / 3.1416 – 1 CS =ID |
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