9640 003 0955 – Oil Seal 10 × 20 × 4 mm (DIN3760‑BS) for STIHL MS150T Chainsaw
Product Description
The 9640 003 0955 Oil Seal is a genuine OEM replacement part, sized 10 mm inner diameter × 20 mm outer diameter × 4 mm thickness, manufactured to DIN3760‑BS standards. It’s specifically designed for sealing rotating shafts in STIHL engines, ensuring leak-free operation of the crankshaft and maintaining internal pressure balance.
Key Features
✅ Part Number: 9640 003 0955
✅ Dimensions: 10 mm ID × 20 mm OD × 4 mm
✅ Type: Oil Seal – DIN3760‑BS specification
✅ Designed for rotary shaft sealing in small engines
✅ High resistance to oil, fuel, and temperature variations
What It’s Used For
✔ Prevents oil leakage from crankcase or gear housing
✔ Protects engine internals by keeping dirt and debris out
✔ Helps maintain correct oil pressure and lubrication
✔ Ideal for replacing worn seals in STIHL chainsaws
Why Choose This Oil Seal
✔ OEM quality ensures long-lasting performance and precise fit
✔ Reduces the risk of engine failure due to oil leaks
✔ Designed to withstand high RPM and harsh engine conditions
✔ Easy replacement during crankshaft or clutch servicing
Compatible Models
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STIHL MS150T Chainsaw
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Also suitable for other small STIHL engines using a 10 × 20 × 4 mm rotary seal (check service manual for verification)
Pack Contents
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1 × Oil Seal 10 × 20 × 4 mm (Part No. 9640 003 0955)
