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It is placed on the crankcase side (i.e. where the crankshaft exits the crankcase) to prevent oil or crankcase leakage.
From vendor listings:
| Parameter | Value |
|---|---|
| Inner Diameter (ID) | 0.560 in ≈ 14.22 mm |
| Outer Diameter (OD) | 1.027 in ≈ 26.08 mm |
| Height / Width / Thickness | 0.275 in ≈ 6.99 mm |
| Equivalent metric size | 15 × 26 × 7 mm |
So a commonly quoted size is 15 × 26 × 7 mm for this seal.
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| Brand | Unbranded |
|---|---|
| Type | Oil Seal |
| MPN | 96309511696 |
| Unit Quantity | 1SET=2PCS |
| Engine Size | 15*26*6.5mm |
| Compatible Product | Chainsaw |
| Number in Pack | 9630-951-1696 |
| Compatible Brand | For STIHL |
| Compatible Model | TS410, TS420, TS480i, TS500i |

