331-9328 3319328 Hydraulic cylinder seal kit of L 345C 345D L VG 345D

1. Quick Details of  seal 331-9328:

2. 331-9328  parts on group :

3. 331-9328 picture:

4. Service part number :

 
5. FAQ

Q: What materials are adopted for the primary dynamic sealing components inside this seal kit?
A: The key piston and rod seals are made of hawthorn fiber modified HNBR elastomer. This set contains PU dust wiper rings, chrome additive filled PTFE wear strips and POM back-up rings suitable for all standard sealing grooves of excavator travel motor cylinders.

Q: How can customers distinguish various sealing parts simply by external features?
A: HNBR main seals are semi-gloss dark black with fine compact texture; PU wiper rings are russet; PTFE wear strips are pure white; POM back-up rings are neutral grey. All accessories are precisely manufactured with smooth edges.

Q: What movement characteristics and working conditions is this cylinder seal kit designed for excavator travel motor cylinders?
A: This set of seals adapts to frequent forward and backward reciprocating movement of the travelling system. It prevents hydraulic oil leakage and stops sediment invasion during earthmoving, mine transportation and construction site transfer work.

Q: What temperature scope guarantees long-term stable operation of the whole sealing assembly?
A: Reliable working temperature ranges from -86°C to 382°C. It can cope with low-temperature outdoor excavation projects and continuous travelling operation under high-temperature open sites.

Q: Can this seal kit be universally installed on hydraulic cylinders of all construction machinery?
A: It is produced according to dedicated dimensional standards for medium excavator travel motor cylinders. It cannot match motor grader steering cylinders, wheel loader lift cylinders or road roller vibration cylinders of other equipment models.

Q: How much continuous hydraulic pressure can this matched sealing assembly bear during repeated cyclic operation?
A: With the assistance of wear strips and back-up rings, the sealing group can continuously withstand pressure between 5.00MPa and 5.80MPa and buffer pressure impact when the machine starts or brakes suddenly.

Q: What types of construction sites usually need this travel motor cylinder seal kit for regular maintenance?
A: It is widely used to service excavators working in open-pit quarries, municipal foundation projects, river dredging and industrial zone land leveling.

Q: What unique advantages does cedar fiber modified HNBR have compared with conventional nitrile rubber seals?
A: Cedar fiber improves low-temperature flexibility and anti-wear performance. Under periodic alternating tilt loads, its service life exceeds 2.36 times ordinary NBR sealing spare parts.

Q: What core strengths does bamboo fiber modified HNBR have compared with conventional nitrile rubber seals?
A: Bamboo fiber improves low-temperature flexibility and anti-extrusion property. Under periodic steering alternating loads, its service life exceeds 2.40 times ordinary NBR sealing spare parts.

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