Description
Overview:
The Oil Seal VA50-40-NBR is a genuine Stihl part for maintaining leak-free operation on selected walk-behind mowers. Made from NBR (nitrile rubber), it is a circular lip-type seal that prevents oil escaping along rotating shafts and keeps dirt out of critical components. This helps protect bearings and gear sets, maintains lubrication, and supports smooth running over long service intervals. Supplied under OEM No. 9642 005 0100, it is a direct replacement for worn or damaged seals on models such as the RM 655.0 RS and RM 655.1 RS. Built to cope with vibration, oil exposure, and everyday mowing conditions, this seal restores factory-grade sealing performance and reduces the risk of oil contamination on the deck, belts, or lawn.
Key Features:
- Genuine Stihl part for assured compatibility and fit (OEM No. 9642 005 0100)
- Durable NBR construction resists engine oil, grease, and wear
- Tight lip profile helps minimise oil weep and blocks dust and debris ingress
- Helps maintain correct lubrication to extend component life and reduce downtime
- Stable sealing performance under vibration and typical mower operating temperatures
- Direct replacement for the original seal to resolve leaks and restore efficiency
- Press-in style design for straightforward fitting with appropriate workshop tools
Typical Applications:
Used on rotating shafts where oil must be retained inside engine or drive housings on Stihl walk-behind mowers. Common locations include lower engine/crankshaft areas near the blade mount and transmission or drive shafts. Ideal for leak repairs, preventative maintenance during overhauls, and when replacing bearings or housings to avoid oil contamination on belts, wheels, and the mowing area.
Also known as:
Radial oil seal, rotary shaft seal, crankshaft end seal, output shaft seal, lip seal, shaft ring seal, rotary lip seal, radial shaft gasket.
Fits Models:
RM 655.0 RS
RM 655.1 RS
MB 655.3 RS
RM655.0RS
RM655.1RS
MB655.3RS
Alternate Part Numbers:
9642-005-0100, 96420050100
Product Specifications
| L&S Part No. | 9642 005 0100 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 96420050100 |
| Unit of Sale | 1 |
| Applications | MB 655.3 RS, MB655.3RS, RM 655.0 RS, RM 655.1 RS, RM655.0RS, RM655.1RS |
| Machine Type | Mowers |
| Fits Brands | Stihl |
| Fits Models | MB 655.3 RS | RM 655.0 RS | RM 655.1 RS |
