142-5867 1425867 Heavy Duty Road Grader Steering Cylinder Full Oil Seal Repair Kit OEM Replacement Maintenance Spare Parts

1. Quick Details of  seal 142-5867:

2. 142-5867 picture:

3. Service part number :

4. FAQ

Q: What special reinforcing filler is blended into the core sealing rubber of this grader repair seal set?
A: Magnesium borate fiber is evenly distributed into modified HNBR base rubber. It effectively cuts down abrasion loss caused by frequent back-and-forth steering movement and avoids swelling deformation after long contact with steering hydraulic fluid.

Q: What clear color differences can buyers distinguish among all accessories inside this overhaul kit?
A: All main rubber sealing components are matte dark black with smooth fine grain surface. Metal frames and coiled tension springs carry uniform silver zinc plating luster, while carbon fiber nylon back-up rings are dark gray for easy classification during cylinder assembly.

Q: What integrated structural design does this full steering cylinder seal kit adopt for heavy road graders?
A: It is a complete matched multi-component assembly instead of separate single seals, adopting multi-lip reciprocating oil and dust blocking structure, fully equipped with flat gaskets, multi-size O-rings and pressure resistant support rings covering all sealing positions of steering cylinder piston and rod.

Q: What full ambient temperature range can this sealing assembly operate stably without performance drop?
A: Its stable working temperature range covers -135°C to 350°C, adapting to cold plateau winter road construction and long-hour high-temperature continuous grading work in southern tropical areas.

Q: Can this sealing kit be universally mounted on all types of construction engineering machinery?
A: It is custom-made only for heavy road grader steering cylinder systems, and cannot be matched with hydraulic excavators, wheel loaders or crawler bulldozers of other equipment series.

Q: What long-term static hydraulic pressure can the whole sealing assembly bear steadily during daily grading operation?
A: It can continuously withstand static hydraulic pressure ranging from 3.7MPa to 5.4MPa, and absorb instantaneous pressure fluctuations triggered by frequent steering turns to prevent slow hydraulic oil seepage.

Q: What core engineering construction scenarios is this sealing kit designed for regular routine overhaul maintenance?
A: It is developed for daily maintenance of steering cylinder rod and piston on heavy road graders, widely applied in highway pavement leveling, municipal road reconstruction, airport runway paving and rural mountain road building projects.

Q: How does the overall service life of this composite seal set compare against ordinary single oil seals sold in the aftermarket?
A: The multi-layer composite matched material structure greatly reduces rubber aging and lip wear risks. Under full-load daily grading working conditions, its usable service life reaches more than 1.72 times that of standard single-piece oil seals.

5. Exhibition and Wearhous

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