Description
Overview:
This Oil Seal 17x32.9x3.6 is a genuine Stihl OEM component designed to keep lubricants in and contaminants out of critical rotating assemblies on Stihl chainsaws. Made from a durable, oil-resistant elastomer with a precision lip profile, it provides a tight, reliable seal on shafts to help maintain stable running and reduce wear. It is commonly used around crankshaft ends and similar rotating points in the powerhead. The compact 3.6 mm profile suits tight installation spaces. Dimensions are 17 mm (internal diameter) x 32.9 mm (outer diameter) x 3.6 mm (width). Suitable for professional and domestic users alike, it is engineered for Stihl models including the 064 and 066 where consistent sealing performance is essential for dependable operation.
Key Features:
- Genuine Stihl OEM part for assured fit and specification
- Robust elastomer construction for resistance to oil, fuel mist, heat, and vibration
- Precision lip design to minimise oil seepage and air leaks
- Helps maintain correct crankcase pressure and reliable performance
- Accurate sizing: 17 mm ID x 32.9 mm OD x 3.6 mm width
- Stable running and reduced risk of over-lean conditions caused by air leaks
- Compact, low-profile seal suitable for tight housings
- Straightforward to install during routine service or rebuilds
- Supports longer service intervals by protecting bearings and internal parts
- Suitable for heavy-duty, professional use as well as DIY maintenance
Typical Applications:
Used during engine repairs, rebuilds, and preventative maintenance on Stihl chainsaws to seal rotating shafts, such as crankshaft ends. Ideal for fixing oil seepage, preventing air ingress, stabilising idle and tuning, and protecting internal components from dust and debris in demanding cutting, felling, and firewood tasks.
Also known as:
Rotary shaft seal, radial oil seal, crankshaft oil seal, shaft lip seal, seal ring, rubber oil seal.
Fits Models:
064, 066, MS 640, MS 650, MS 651, MS 660, MS 661, MS 661 C, MS640, MS650, MS651, MS660, MS661, MS661C
Alternate Part Numbers:
9640-003-1850, 96400031850
Product Specifications
| L&S Part No. | 9640 003 1850 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 96400031851 |
| Unit of Sale | 1 |
| Applications | 064, 066, MS 640, MS 650, MS 651, MS 660, MS 661, MS 661 C, MS640, MS650, MS651, MS660, MS661, MS661C |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Fits Models | MS640 | MS650 | MS651 | MS660 | MS661, MS661C | 064 | 066 |
