Oil seals: Tolerance tables
Press-fit tolerance for oil seal outer diameter in inches and millimeters
Inches:
| Bore diameter | Press-fit allowance | Tolerance | ||
| Metal case | Rubber OD | Metal case | Rubber OD | |
| Less than 1,000 | +0,004 | +0,006 | +/-0,002 | +/-0,003 |
| 1,001-2,000 | +0,004 | +0,007 | +/-0,002 | +/-0,003 |
| 2,001-3,000 | +0,004 | +0,008 | +/-0,002 | +/-0,003 |
| 3,001-4,000 | +0,005 | +0,010 | +/-0,002 | +/-0,004 |
| 4,001-6,000 | +0,005 | +0,010 | +0,003 | +/-0,004 |
| -0,002 | ||||
| 6,001-8,000 | +0,006 | +0,010 | +0,004 | +/-0,004 |
| -0,002 | ||||
| 8,001-10,000 | +0,008 | +0,010 | +0,006 | +/-0,004 |
| -0,002 | ||||
| 10,001-20,000 | +0,008 | +0,010 | +0,010 | +/-0,004 |
| -0,002 | ||||
Millimeters:
| Bore diameter | Metal case | Rubber OD |
| Less than 50,00 | +0,10/+0,20 | +0,15/0,30 |
| 50,01-80,00 | +0,13/+0,23 | +0,20/+0,35 |
| 80,01-12,00 | +0,15/+0,25 | +0,20/+0,35 |
| 120,01-180,00 | +0,18/+0,28 | +0,25/+0,45 |
| 180,01-315,00 | +0,20/+0,30 | +0,25/+0,45 |
| 315,00-500,00 | +0,23/+0,35 | +0,30/+0,55 |
Width tolerance of seal:
| Inch | Tolerance | Millimeter | Tolerance |
| Less than 0,313 | +/-0,008 | Less than 8 | +/-0,20 |
| 0,314-0,472 | +/-0,012 | 8,01-12 | +/-0,30 |
| 0,473-0,709 | +/-0,016 | 12,01-18 | +/-0,40 |
| Over 0,710 | +/-0,020 | Over 18 | +/-0,50 |
Press-fit allowance and permissible eccentricity of seal OD in millimeter
| Bore diameter | Press-fit allowance | Permissible eccentricity | |
| Metal case | Rubber OD | ||
| Less than 50 | +0,10/+0,20 | +0,15/+0,30 | 0,25 |
| 50,1-80 | +0,13/+0,23 | +0,20/+0,35 | 0,35 |
| 80,1-120 | +0,15/+0,25 | +0,20/0,35 | 0,50 |
| 120,1-180 | +0,18/+0,28 | +0,25/0,45 | 0,65 |
| 180,1-300 | +0,20/+0,30 | +0,25/+0,45 | 0,80 |
| 300,1-500 | +0,23/+0,35 | +0,30/+0,55 | 1,00 |
All data courtesy of So Giant Oil Seal Industrial Co., Ltd.
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