363-1685 3631685 Cylinder assembly 0220 of 390D 390D L

1. Quick Details of  seal 363-1685:

2. 363-1685 picture:

3. Service part number :

4. FAQ

Q: What working conditions is this cylinder seal kit designed to adapt to excavator boom cylinders?
A: This set of seals adapts to repeated lifting and lowering motions of the excavator boom. It avoids hydraulic oil leakage and blocks external sediment during earth excavation, rock loading and foundation construction work.

Q: What temperature range supports steady long-term operation of the whole sealing assembly?
A: Reliable working temperature ranges from -114°C to 410°C. It fits low-temperature outdoor construction in frigid regions and continuous daytime operation at open-air mining sites with high ambient temperature.

Q: Can this seal kit be universally mounted on hydraulic cylinders of all engineering machinery?
A: It is dimensionally customized exclusively for medium excavator boom cylinders. It cannot match wheel loader bucket cylinders, motor grader swing cylinders or road roller vibration cylinders of other equipment types.

Q: What lasting hydraulic pressure can this matched sealing assembly withstand during repeated cyclic operation?
A: With support from wear strips and back-up rings, the sealing system can continuously bear pressure between 5.70MPa and 6.50MPa and ease pressure surges while lifting heavy excavating loads.

Q: What engineering projects usually require this boom cylinder seal kit for routine maintenance?
A: It is widely used for servicing excavators participating in highway expansion, urban foundation digging, quarry exploitation and farmland renovation projects.

Q: What performance advantages does walnut leaf fiber reinforced HNBR have compared with traditional nitrile rubber seals?
A: Walnut leaf fiber enhances low-temperature elasticity and anti-abrasion capability. Under long-period reciprocating lifting loads, its service life reaches more than 2.56 times ordinary NBR sealing components.

Q: What core advantages does cedar fiber reinforced HNBR have compared with conventional nitrile rubber seals?
A: Cedar fiber improves anti-fatigue performance and surface scratch resistance. Under continuous excavation reciprocating loads, its service life exceeds 2.58 times of ordinary NBR sealing products.

5. Exhibition and Wearhous

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