222-3909 2223909 152.55mm outer diameter crankshaft seal of CS-583C CS-583D

Q: What is the OEM part number of this crankshaft oil seal?
A: The OEM part number is 222-3909, this crankshaft oil seal is made for excavator engine crankshaft sealing maintenance.

Q: What construction machine can part 222-3909 be installed and matched on?
A: 222-3909 fits excavator engine, mounted on crankshaft to block engine oil leakage and stop external dust entering engine.

Q: What raw materials compose this crankshaft oil seal?
A: It is made of NBR, metal casing and built-in garter spring, with good oil resistance and stable sealing tension.

Q: What core function does this crankshaft oil seal perform for excavator engine?
A: It forms a tight rotary seal around crankshaft, keeps engine oil inside the crankcase and prevents dirt and water from entering engine chamber.

Q: Where is this crankshaft oil seal installed in the engine assembly?
A: It is fitted at the crankshaft end of engine block, between rotating crankshaft and stationary engine housing.

Q: What issue will occur once this crankshaft oil seal becomes worn?
A: Engine oil will leak out slowly, and external contaminants can go into engine, accelerating wear of crankshaft bearings.

Q: What product category does 222-3909 belong to?
A: It belongs to crankshaft oil seals, rotary sealing spare component for excavator engine repair and overhaul.

Q: What role does the built-in spring play on this oil seal?
A: The spring keeps the sealing lip tightly against crankshaft surface and maintains consistent sealing pressure during shaft rotation.