Description
Overview:
This Oil Seal 20 x 42 x 5 mm is a Genuine Stihl part for heavy‐duty cut-off saws, including the TS700 and TS800. It is a precision-moulded elastomer seal designed to keep oil in and contaminants out around rotating shafts. By maintaining a tight barrier at key engine sealing points, it helps preserve crankcase integrity, bearing protection, and correct lubrication. The fuel- and oil-resistant construction suits high temperatures and dusty jobsite conditions common to construction and landscaping work. Fitted in place of a worn or leaking seal, it supports reliable starting, stable running, and consistent power delivery. Sized for an accurate, interference fit, it installs cleanly and restores the intended performance of compatible Stihl machines.
Key Features:
- Genuine Stihl part for assured compatibility and performance
- Dimensions: 20 x 42 x 5 mm for a precise, secure fit
- Helps prevent oil loss and ingress of dust and debris
- Oil- and fuel-resistant materials suited to hot, demanding environments
- Supports engine efficiency, stable idle, and reduced wear
- Compatible with selected sealing locations on TS700 and TS800
- Straightforward to fit with standard workshop tools
- Reliable sealing around high-speed rotating shafts
- Restores proper crankcase sealing to minimise downtime
- Stihl reference MPN: 9640 003 2257
Typical Applications:
Used on Stihl cut-off saws to seal rotating shafts in the engine or drive area where oil retention and contamination control are critical. Ideal when refurbishing machines that show signs of oil seepage, erratic running caused by air leaks, or after bearing and crankshaft service.
Also known as:
Radial shaft seal, oil lip seal, rotary shaft seal, crankshaft oil seal, seal ring, shaft oil seal.
Fits Models:
TS700, TS800
Alternate Part Numbers:
9640 003 2260, 9640-003-2257, 96400032260, 96400032257
