4N-1870 4N1870 0.78mm governor gasket of PR-450 PM-565 PR-750B

1. Quick Details of  seal 4N-1870:

2. 4N-1870 picture:

3. Service part number :

 
4. FAQ

Q: What composite materials are contained within this valve cover overhaul gasket kit?
A: This kit consists of low carbon steel reinforced graphite composite gaskets, bamboo leaf fiber sealing sheets, HNBR rubber washers and precision stainless steel adjusting shims. Different materials are designed to match various static sealing surfaces of engine valve cover assembly.

Q: What visual characteristics help customers quickly distinguish each sealing component inside the package?
A: Steel composite gaskets are silver grey with matte graphite surface; fiber gaskets are light tan; rubber washers are deep black; adjusting shims are bright silver metal sheets. All components are pre-cut strictly following original equipment housing outlines.

Q: What sealing requirements is this gasket kit developed to meet for wheel loader engine valve cover assemblies?
A: It focuses on static sealing of valve cover joint flanges and end plates. Multi-material matching adapts to fluctuating operating temperatures and engine vibration to prevent engine oil leakage on split mating surfaces.

Q: What continuous working temperature range can this whole gasket kit keep stable sealing performance?
A: Its applicable temperature range covers -158°C to 441°C, suitable for cold northern winter material loading operations and long-duration heavy-duty work in tropical aggregate stockyards.

Q: Can this gasket kit be universally used for engine maintenance of all construction machinery?
A: It is dimensionally customized exclusively for medium large wheel loader valve cover structures only. It cannot fit motor grader engine housings, crawler excavator hydraulic assemblies or road roller transmission cases of other equipment series.

Q: What static working pressure can these composite gaskets sustain during long-term continuous operation?
A: The matched assembly can steadily withstand static pressure ranging from 6.22MPa to 7.02MPa. It maintains reliable sealing even if slight housing deformation arises under frequent start-stop impact loads.

5. Exhibition and Wearhous

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