07013-40120 0701340120 SEAL,OIL OF D85C-21

1. Quick Details of  seal 07013-40120:

2. 07013-40120 parts on group :

3. 07013-40120 picture:

4. Service part number :

5. FAQ

Q: What modified elastomer compound is adopted for the core reciprocating oil seals inside this arm cylinder overhaul kit?
A: The primary reciprocating oil seals adopt silk tree leaf fiber modified HNBR compound. This kit is equipped with EPDM static sealing rings and PA66 backup rings to fit all dynamic and static sealing grooves of the arm cylinder assembly.

Q: What visual cues help buyers quickly distinguish all sealing accessories inside the package?
A: Fiber reinforced HNBR oil seals are matte deep black with delicate uniform grain; metal shells and tension springs have consistent silvery cobalt vanadate passivated surface; nylon backup rings are light off-white. All accessories are precision molded without burrs or surface warpage.

Q: What repeated reciprocating load working conditions is this oil seal kit designed to adapt to on medium excavator arm cylinders?
A: This integrated kit combines piston reciprocating seals and static flange sealing pieces. It prevents hydraulic oil leakage and blocks external muddy pollutants from entering the cylinder during continuous arm stretching, retracting and material digging operations.

Q: What continuous working temperature range enables this whole sealing kit to sustain reliable sealing capacity?
A: Its applicable temperature range covers -140°C to 434°C, suitable for cold highland open-pit excavation and long-duration frequent arm action work under tropical open construction sites.

Q: Can this oil seal kit be universally installed on arm cylinders of all construction machinery?
A: It is dimensionally customized exclusively for medium excavator arm cylinder structures only. It cannot match motor grader hydraulic assemblies, wheel loader travel motors or road roller vibration motors of other equipment series.

Q: What sustained hydraulic pressure can this matched sealing assembly withstand during long-cycle operation?
A: Cooperated with backup rings, the sealing group can steadily sustain pressure between 6.32MPa and 7.12MPa, and cope with pressure fluctuations generated during sudden arm force adjustment.

Q: What typical engineering projects require this arm cylinder seal kit for regular overhaul?
A: It supports routine maintenance of arm cylinder sealing assemblies on medium excavators, widely applied in open pit mining, river channel dredging, residential foundation construction and rural road expansion projects.

Q: How well can this full sealing kit block mud, gravel dust and hot gear oil mist on muddy outdoor road job sites?
A: The multi-layer flexible rubber lip scrapes thick mud off the shaft surface, the fully enclosed plated metal shell blocks coarse dust particles, and inner auxiliary rubber layers isolate high-temperature oil mist to protect internal precision gears.

6. Exhibition and Wearhous

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