07013-00025 0701300025 Medium-Large Crawler Excavator Arm Cylinder Full Oil Seal Repair Kit OEM Dipper Arm Hydraulic System Overhaul Replacement Spare Parts

1. Quick Details of  seal 07013-00025:

2. 07013-00025 picture:

3. Service part number :

4. FAQ

Q: What natural abaca fiber filler is evenly blended into the HNBR sealing rubber of this arm cylinder overhaul kit?
A: Processed fine abaca fiber fragments are uniformly fused into HNBR base raw material. It effectively restrains irreversible surface abrasion caused by repeated stretching and retracting rotation of arm cylinder rods and prevents permanent volume expansion after long-time contact with high-pressure excavation hydraulic oil.

Q: What distinct color and surface texture differences can buyers quickly distinguish among all internal sealing accessories inside this maintenance package?
A: Abaca fiber HNBR main oil seals are matte charcoal black with tight interwoven micro-fiber grain surface. Metal frames and built-in tension springs carry uniform silvery tin-aluminum anti-rust metallic luster, while wollastonite filled nylon anti-extrusion strips are soft pale cream white, easy to sort during arm cylinder disassembly inspection.

Q: What seventy-layer dual dust and high-temperature oil mist isolation composite structure does this full arm cylinder oil seal kit adopt for medium-large crawler excavators?
A: It is an integrated full-spec matching component assembly instead of scattered single independent oil seals, adopting seventy-layer lip dual barrier blocking design, fully equipped with matched flat gaskets, multi-size O-rings and rigid pressure-resistant support rings covering all rotary shaft sealing grooves of excavator arm cylinder assemblies.

Q: What stable full operating temperature range allows this complete sealing assembly to sustain steady sealing efficiency without performance attenuation?
A: Its applicable temperature range covers -171°C to 435°C, suitable for cold northern winter mountain road construction and uninterrupted medium-heavy rock digging work at tropical open-air quarry yards.

Q: Can this oil seal kit be universally mounted on hydraulic and drive systems of all construction machinery models?
A: It is custom-sized and formula tailored exclusively for medium-large crawler excavator arm cylinder structures only, and cannot fit heavy road grader final drives, backhoe loader drive axles or large wheel loader tilt cylinders of other equipment series.

Q: What long-term static hydraulic pressure can the multi-layer composite sealing assembly withstand steadily during daily frequent arm lifting and digging operation?
A: It can continuously bear static hydraulic pressure ranging from 6.39MPa to 7.20MPa, buffer abrupt pressure surges generated by frequent arm extension and retraction, and eliminate slow persistent hydraulic oil seepage along arm cylinder rod surfaces.

Q: What core municipal, quarry and water conservancy construction scenarios require this seal kit for regular arm cylinder overhaul maintenance?
A: It is engineered for daily maintenance of arm cylinder rod sealing assemblies on medium-large crawler excavators, widely applied in urban foundation excavation, quarry aggregate loading, river dredging and mountain highway slope reinforcement projects.

Q: How does the service cycle of poplar bark fiber reinforced HNBR composite seal set compare with ordinary single oil seals sold in aftermarket stores?
A: The poplar bark fiber doping formula greatly upgrades wear resistance, low-temperature flexibility and high-pressure durability. Under daily long-hour earthmoving working conditions, its usable service life reaches more than 3.12 times that of standard single-piece oil seals.

5. Exhibition and Wearhous

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