272-0390 2720390 Valve Cover Base Gasket ring

1. Quick Details of  seal 272-0390 :

2.  272-0390  picture:

3. Service part number :

 
4. FAQ
Q: What is the function of Valve Cover ring ?

A: It is a sealing rubber strip installed between the valve cover and cylinder head, made of high-temperature and oil-resistant rubber (Viton / Nitrile rubber).here are the function of the cover valve ring:

• Sealing and Leakage Prevention (Most Critical Function)Seals the mating surface between the valve cover and cylinder head to prevent engine oil leakage. It also blocks external dust and moisture from entering the valve chamber, protecting internal precision components such as camshafts and rocker arms.
• Vibration Buffering and Noise ReductionAbsorbs vibration of the valve cover during engine operation, avoids rigid metal contact, reduces abnormal noise, and prevents loosening and cracking of the cover.
• High Temperature Resistance and Oil Aging ResistanceAdaptable to the high-temperature environment (up to 120–150℃) and oil working conditions of diesel engines. It maintains long-term sealing performance and avoids oil contamination and circuit corrosion caused by oil seepage.
• Protect Internal ComponentsKeeps the valve chamber clean, prevents impurities from entering the lubrication system, reduces component wear, and extends engine service life.

Q: Are there any official installation instructions or videos for the Komatsu transmission seal kit?
A: Official printed instructions: Most genuine Komatsu seal kits include a basic paper manual with exploded views, seal locations, and general torque/assembly notes.
Detailed shop manuals: Full step-by-step instructions (for transmission disassembly/reassembly) are in the Komatsu Shop Manual (Service Manual) for your specific model (e.g., WA380, D65, PC200). These are available via Komatsu dealers or official service portals.

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