147-5738 1475738 200mm outer diameter piston guide ring of 385B 374F L 385C 374D L 365B

1. Quick Details of  seal 147-5738:

2.  147-5738 picture:

3. Service part number :

4. FAQ

Q: What color will be delivered for standard stock goods?
A: Conventional finished product is matte black. Custom dark grey versions can be arranged upon bulk purchase.

Q: Can this piston seal ring be fitted to all types of construction machinery cylinders?
A: It is specially designed for excavator main hydraulic cylinders. It cannot fit grader tilt cylinders or wheel loader lift cylinders.

Q: What construction working scenarios suit this sealing component?
A: It performs steadily in heavy-load mining projects, adapting to long-time reciprocating movement under high pressure.

Q: What temperature range can this piston seal ring withstand during continuous operation?
A: It maintains stable working performance within -35°C ~ 120°C under continuous heavy excavation operation.

Q: What installation precautions should maintenance technicians follow?
A: Do not expand the ring excessively during assembly, and clear all tiny impurities inside the piston groove in advance.

Q: What core function does this piston seal ring realize inside the hydraulic cylinder?
A: It guides the piston movement and prevents direct metal friction between piston and cylinder barrel.

Q: What installation notes should maintenance operators keep in mind?
A: Do not fold or twist the flat seal ring forcibly, and clear all fine dust and metal debris inside the piston groove before assembly.

Q: What core effect does this piston seal ring bring inside the boom cylinder?
A: It separates high-pressure and low-pressure oil chambers and prevents hydraulic fluid cross leakage on two sides of the piston assembly.

Q: Will the seal ring be squeezed and deformed easily under lasting high hydraulic pressure?
A: The fiber reinforced structure improves rigidity, which greatly reduces the risk of extrusion damage under normal circulating pressure.

Q: What installation tips should maintenance technicians follow?
A: Avoid bending the flat seal ring violently during assembly, and clear sediment inside the piston groove completely in advance.

Q: What core function does this piston seal ring perform inside the cylinder?
A: It separates high-pressure and low-pressure oil chambers inside the cylinder and prevents hydraulic fluid from flowing across both sides of the piston.

Q: What engineering projects commonly require replacement of this piston seal ring?
A: It serves routine maintenance of hydraulic cylinder piston sealing assemblies on medium crawler excavators, widely used in urban infrastructure, highway subgrade construction, small quarry loading and residential foundation excavation projects.

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