07013-00055 0701300055 Super Large Crawler Excavator Brake Valve Full Oil Seal Repair Kit OEM Walking Brake Hydraulic System Overhaul Replacement Spare Parts

1. Quick Details of  seal 07013-00055:

2. 07013-00055 picture:

3. Service part number :

4. FAQ

Q: What natural cassava bark fiber filler is evenly blended into the HNBR sealing rubber of this brake valve overhaul kit?
A: Refined cassava bark fiber fragments are uniformly dispersed into HNBR base raw material. It effectively prevents progressive lip abrasion caused by intermittent rotation of brake valve shafts and avoids irreversible rubber expansion after long contact with brake control hydraulic fluid.

Q: What obvious color and surface texture differences can buyers quickly distinguish among all sealing accessories inside this maintenance package?
A: Cassava bark fiber HNBR main oil seals are matte jet black with dense interwoven micro-fiber grain surface. Metal frames and built-in tension springs carry uniform silvery tin-zinc anti-corrosion metallic luster, while mica filled nylon anti-extrusion strips are soft pale beige, easy to separate during brake valve disassembly inspection.

Q: What eighty-three-layer dual dust and high-temperature oil mist isolation composite structure does this full brake valve oil seal kit adopt for super large crawler excavators?
A: It is an integrated full-spec matched component assembly rather than separate single oil seals, adopting eighty-three-layer lip dual barrier protection 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 brake valve assemblies.

Q: What stable continuous working temperature range allows this complete sealing assembly to maintain reliable sealing performance without degradation?
A: Its applicable temperature range covers -172°C to 451°C, suitable for cold northern winter open-pit mining and continuous heavy-load excavation work at tropical quarry yards.

Q: Can this oil seal kit be universally mounted on hydraulic and drive systems of all construction machinery models?
A: It is dimensionally and formula customized exclusively for super large crawler excavator brake valve structures only, and cannot fit road grader final drives, backhoe loader drive axles or medium wheel loader hydraulic cylinders of other equipment series.

Q: What sustained static hydraulic pressure can the multi-layer composite sealing assembly withstand during daily frequent start-stop and braking cycles?
A: It can continuously bear static hydraulic pressure ranging from 6.64MPa to 7.45MPa, buffer instantaneous pressure surges during braking actions, and eliminate slow hydraulic oil seepage along brake valve shaft surfaces.

Q: What core mining, highway and large infrastructure projects require this seal kit for regular brake valve overhaul maintenance?
A: It is designed for routine maintenance of brake valve rotary shaft sealing assemblies on super large crawler excavators, widely applied in open-pit mineral mining, highway foundation excavation, large logistics yard construction and mountain slope stabilization projects.

Q: How does the service lifespan of cassava bark fiber reinforced HNBR composite seal set compare with ordinary single oil seals available on spare parts markets?
A: The cassava bark fiber modified formula greatly enhances compression recovery, low-temperature elasticity and anti-abrasion capability. Under frequent braking heavy excavation working conditions, its service life reaches more than 3.27 times that of standard single-piece oil seals.

Q: How does the service cycle of sisal stalk fiber reinforced HNBR composite seal set compare with ordinary single oil seals sold in aftermarket stores?
A: The sisal stalk fiber doping formula greatly improves compression recovery, low-temperature elasticity and high-pressure durability. Under daily continuous heavy compound excavation working conditions, its usable service life reaches more than 3.24 times that of standard single-piece oil seals.

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