115-4109 1154109 Seal Assembly of 953B 953C 963B

Q: What is the OEM part number of this crankshaft oil seal?
A: The OEM part number is 115-4109, this crankshaft oil seal is engineered for excavator engine crankshaft rotary sealing and engine overhaul.

Q: What construction machine can part 115-4109 be fitted onto?
A: 115-4109 fits excavator engine, installed at crankshaft end to seal lubricating oil and isolate external impurities.

Q: What raw materials are used to manufacture this crankshaft oil seal?
A: It adopts FKM, metal shell and garter spring, featuring excellent high temperature resistance and long-term oil resistance.

Q: What core function does this crankshaft oil seal perform for excavator engine?
A: It creates a tight rotary seal barrier, retaining engine oil inside crankcase and blocking dust, water and grit from entering engine interior.

Q: Where is this crankshaft oil seal assembled within the engine assembly?
A: It is pressed into the engine housing at the rear or front end of crankshaft, between rotating crankshaft and fixed engine block.

Q: What problem will appear if this crankshaft oil seal ages and fails?
A: Engine oil leakage will occur, and external dirt can enter the engine, speeding up wear of crankshaft and bearing components.

Q: What product category does 115-4109 belong to?
A: It belongs to crankshaft oil seals, rotary sealing spare part for excavator engine maintenance and repair service.