07013-01068 0701301068 Ultra Large Crawler Excavator Main Control Valve Full Oil Seal Repair Kit OEM Multi-Way Hydraulic Control Assembly Overhaul Replacement Spare Parts

1. Quick Details of  seal 07013-01068:

2. 07013-01068 picture:

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4. FAQ

Q: What raw materials are adopted for the main oil seals inside this main control valve overhaul kit?
A: The primary dynamic oil seals are manufactured from tung leaf fiber modified HNBR compound. The kit is supplemented with FKM auxiliary seals and PA66 backup rings to fit all spool and flange sealing positions of the main control valve.

Q: What visual characteristics help customers differentiate each sealing component in the package?
A: Fiber reinforced HNBR oil seals are jet black with smooth matte surface; metal shells and springs carry uniform silver anti-corrosion plating; nylon backup rings are light beige. All accessories have tidy edges without burrs or deformation.

Q: What complex working conditions is this oil seal kit designed to cope with on ultra-large excavator main control valves?
A: This integrated kit combines dynamic spool sealing and static flange sealing. It inhibits internal hydraulic oil leakage and pressure loss, while blocking external mud from entering the valve clearance during frequent composite actions.

Q: What continuous working temperature range allows this whole sealing kit to maintain stable sealing performance?
A: Its applicable temperature range covers -178°C to 474°C, suitable for cold alpine winter open-pit mining and continuous heavy-duty cyclic excavation work in high-temperature tropical quarry yards.

Q: Can this oil seal kit be universally used for hydraulic valve overhaul of all construction machinery?
A: It is dimensionally customized exclusively for ultra large crawler excavator main control valve structures only. It cannot match motor grader hydraulic assemblies, wheel loader multi-way valves or medium excavator swing motor seal kits of other equipment series.

Q: What sustained hydraulic pressure can this matched sealing assembly withstand during long-term operation?
A: Cooperated with backup rings, the sealing group can steadily sustain pressure between 7.10MPa and 7.91MPa, and withstand pressure surges generated during bucket lifting and slewing compound movements.

Q: What typical large-scale engineering projects require this main control valve seal kit for regular maintenance?
A: It supports routine overhaul of main control valve sealing assemblies on ultra large crawler excavators, widely applied in large open-pit mineral exploitation, coastal land reclamation, mountain highway tunnel construction and hydropower station foundation excavation projects.

Q: How does the service life of fiber-modified HNBR oil seals compare with ordinary standard NBR oil seals on the spare parts market?
A: The added plant fiber filler significantly improves compression set resistance and anti-fatigue capability. Under long-cycle reciprocating movement working conditions, its service life reaches more than 3.52 times that of conventional nitrile oil seals.

Q: How do these oil seals perform when operating in long-term dusty and humid open construction sites?
A: The precision sealing lip can wipe off fine particles attached to the valve spool surface. The metal outer shell prevents large grit from abrading the lip, effectively slowing down sealing wear and reducing internal leakage.

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