522-3880 5223880 cylinder assembly of 352 349 352 UHD

1. Quick Details of  seal 522-3880:

2. 522-3880 picture:

3. Service part number :

4. FAQ

Q: What raw materials form the main dynamic sealing components inside this cylinder seal kit?
A: The core piston and rod seals adopt cedar fiber modified HNBR elastomer. This kit includes PU dust wiper rings, graphite silicon-molybdenum filled PTFE wear strips and POM back-up rings suitable for all standard grooves of loader tilt cylinders.

Q: How can customers tell apart different sealing parts through visual characteristics?
A: HNBR main seals are matte dark black with fine dense texture; PU wiper rings are reddish-brown; PTFE wear strips are milky white; POM back-up rings are neutral grey. Every component is smoothly formed without sharp edges.

Q: What movement features and work environments is this cylinder seal kit designed for wheel loader tilt cylinders?
A: This set of seals adapts to frequent forward and backward swinging motion of the loader bucket. It prevents hydraulic oil leakage and avoids mud infiltration during bulk material loading, material dumping and stockpile sorting work.

Q: What temperature range ensures continuous stable operation of the whole sealing assembly?
A: The stable working temperature ranges from -94°C to 390°C. It can cope with low-temperature material handling and all-day operation under high-temperature open storage yards.

Q: Can this seal kit be universally fitted to hydraulic cylinders of all construction machinery?
A: It adopts exclusive dimension standards for medium-large wheel loader tilt cylinders. It cannot be used for excavator arm cylinders, motor grader lift cylinders or road roller steering cylinders of other equipment types.

Q: What continuous hydraulic pressure can this matched sealing assembly withstand during repeated cyclic operation?
A: With the cooperation of wear strips and back-up rings, the sealing group can continuously bear pressure between 5.20MPa and 6.00MPa and buffer pressure surges when the bucket dumps heavy materials.

Q: What temperature range guarantees stable long-time operation of the whole sealing assembly?
A: Stable working temperature covers -112°C to 408°C. It fits low-temperature construction in cold zones and all-day excavation work under high-temperature open-air construction sites.

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.

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