Sealing Gasket-6754-51-4440

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One-Stop Parts Solutions for Peak Equipment Performance

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Komatsu Engine

Sealing Gasket-6754-51-4440

PRODUCT DESCRIPTION:

1. High-efficiency Leak-proof SealingPrecisely fits the mating surfaces of SAA4D107E engine components, effectively blocking the leakage of engine oil, coolant and hydraulic oil. It ensures the stable pressure and liquid level of the engine's lubrication, cooling and hydraulic systems, and avoids faults such as engine overheating, power drop and component wear caused by medium leakage.

2. Temperature & Pressure ResistanceAdapts to the high-temperature and high-pressure working environment of the SAA4D107E engine, maintaining stable sealing performance under temperature and pressure fluctuations during long-time operation. It effectively prevents sealing failure caused by thermal expansion and contraction of engine metal parts and system pressure changes.

3. Dust & Corrosion ProtectionIsolates external dust, sediment and other impurities from entering the engine's sealing positions, avoiding abrasive damage to internal precision components; resists the corrosion of oil, coolant and exhaust gas on the gasket and surrounding metal parts, extending the service life of related engine components.

4. Vibration Buffering & Gap CompensationUtilizes the excellent elasticity of rubber materials to buffer the vibration generated during engine operation, reducing the looseness of sealing joints caused by mechanical vibration; automatically compensates the micro gaps of mating surfaces caused by machining, assembly errors and thermal expansion, maintaining long-term reliable sealing effect.

5. Integral Sealing ConsistencyAdopts one-piece integral molding process with no joints or air bubbles, ensuring uniform elasticity of the whole gasket surface. The optimized sealing lip design fits closely to the mating surface without dead angles, realizing all-round effective sealing and avoiding local leakage at key sealing positions.

PRODUCT DETAILS

Product Advantages

1. OEM Standard Precision Matching Produced in strict accordance with Komatsu SAA4D107E engine's original factory drawings and tolerance standards, the overall size, sealing lip shape and mounting hole position are perfectly matched with component mating surfaces. No secondary processing is required for installation, reducing assembly difficulty and adaptation risks, and improving maintenance efficiency.

2. Reinforced Structure for High Stability Key stress parts adopt high-strength metal skeleton reinforcement design, which effectively prevents the gasket from deformation, extrusion damage and aging cracking under long-term high-temperature and high-pressure working conditions, and greatly improves the overall structural stability and anti-fatigue performance of the gasket.

3. High-quality Durable Material Selected high-purity NBR with excellent oil resistance, wear resistance and anti-aging performance for conventional working conditions; the optional FKM version is specially optimized for high-temperature and strong corrosion working conditions, with a service life extended by more than 30% compared with ordinary gaskets, reducing the frequency of maintenance and replacement.

4. Strong Adaptability to Harsh Working Conditions Passed professional performance tests such as dust resistance, continuous vibration, temperature cycle and medium corrosion. The sealing performance remains stable in harsh working environments such as construction sites, mines and field operations, fully adapting to the high-intensity operation requirements of Komatsu medium engineering machinery.

5. High Cost Performance & Easy Replacement Product performance is close to Komatsu original accessories with a more favorable procurement price; the compact structure is easy to install and disassemble without special tools, shortening equipment maintenance time, reducing downtime loss and lowering the overall operation and maintenance cost of users.


Installation & Maintenance Tips

1. Clean the sealing mating surface and installation position before installation, remove oil stains, rust, residual glue and old gasket residues, and ensure the surface is flat and free of obvious scratches and burrs.

2. Avoid twisting, folding and scratching the gasket during installation; align the mounting holes with the component holes accurately and install in the correct direction according to the marking (if any).

3. Apply a small amount of clean engine oil on the sealing lip for auxiliary installation to ensure the gasket is fully attached to the mating surface without gaps; fasten the fixing bolts in diagonal sequence according to the specified torque in the engine manual to avoid uneven stress and gasket damage.

4. Do not reuse the old gasket after disassembly, as the rubber layer will lose elasticity and cause sealing failure; replace it with a new one in time during engine maintenance and overhaul.

5. Regularly check the sealing status of the gasket, and replace it in time if aging, cracking, deformation, delamination or medium leakage is found at the sealing position to avoid the expansion of engine faults.



SPECIFICATION

Item

Details

Product Model

6754-51-4440

Product Name

Sealing Gasket

Applicable Model

Komatsu engine SAA4D107E, suitable for Komatsu PC200-8, PC220-8 and other medium excavators and engineering machinery

Applicable Parts

Key sealing positions of the engine (valve chamber cover, water pump, oil pan, fuel pump, hydraulic pipeline connecting interfaces)

Product Material

High-purity Nitrile Butadiene Rubber (NBR) with metal skeleton reinforcement; Optional Fluororubber (FKM) version for extreme high-temperature and corrosion working conditions


Parameter Category

Parameter Value

Size Specification

Precisely processed according to Komatsu original factory drawings, overall size/sealing lip size/mounting hole position fully match the mating surface of SAA4D107E engine

Material Performance

NBR: Hardness 70±5 Shore A, oil resistance volume change rate ≤10%, tensile strength ≥18MPaFKM: Hardness 75±5 Shore A, oil resistance volume change rate ≤5%, tensile strength ≥20MPa

Operating Temperature

NBR version: -40℃ ~ 120℃FKM version: -20℃ ~ 200℃

Operating Pressure

≤1.6MPa (suitable for the conventional working pressure of SAA4D107E engine's lubrication, cooling and hydraulic systems)

Applicable Medium

Engine oil, coolant, diesel oil, gear oil, hydraulic oil and other common media of Komatsu SAA4D107E engine

Service Life

≥5000 hours under normal working conditions (FKM version ≥7000 hours)


INQUIRE IMMEDIATELY

+86 15853738837

+86 15954702799

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