Sealing Gasket-6754-11-5142

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Komatsu Engine

Sealing Gasket-6754-11-5142

PRODUCT DESCRIPTION:

1. High-efficiency Leak-proof Sealing Precisely fits the mating surfaces of SAA6D114E engine heavy-duty components, effectively blocking the leakage of engine oil, coolant, hydraulic oil and other fluid media. It ensures the stable pressure and liquid level of the engine's lubrication, cooling and hydraulic systems, and avoids heavy faults such as engine overheating, power drop and component wear caused by medium leakage.

2. Extreme Temperature & Pressure Resistance Adapts to the ultra-high temperature and high-pressure working environment of SAA6D114E large heavy-duty engine, maintaining stable sealing performance under extreme temperature and pressure fluctuations. It effectively prevents sealing failure caused by thermal expansion and contraction of engine metal parts and sudden system pressure changes during high-load operation.

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

4. Strong Vibration Buffering & Gap Compensation Utilizes the high elasticity of premium rubber materials to buffer the strong continuous vibration generated during the long-term high-load operation of the engine, 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 and reliable sealing effect.

5. Full-surface Sealing Consistency Adopts one-piece integral molding process with no joints or air bubbles, ensuring uniform elasticity of the whole gasket surface. The optimized curved sealing lip design is closely attached to the mating surface without dead angles, realizing full-surface effective sealing and avoiding local leakage of key sealing positions of heavy-duty engines.

PRODUCT DETAILS

Product Advantages

1. OEM Standard Precision Matching Produced in strict accordance with Komatsu SAA6D114E engine's original factory drawings and high-precision 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 the maintenance efficiency of large engineering machinery.

2. Reinforced Heavy-duty Structure for High Stability Key stress parts adopt thickened high-strength metal skeleton reinforcement design with anti-deformation treatment, 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 for heavy-duty working conditions.

3. High-quality Durable Material for Heavy Loads Selected high-purity NBR with excellent oil resistance, wear resistance and anti-aging performance for conventional heavy-duty working conditions; the optional FKM version is specially optimized for extreme high-temperature and strong corrosion working conditions, with a service life extended by more than 40% compared with ordinary gaskets, significantly reducing the frequency of maintenance and replacement.

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

5. High Cost Performance & Easy Replacement Product performance is close to Komatsu original genuine accessories with a more favorable procurement price; the compact and lightweight structure is easy to install and disassemble without special tools, shortening the maintenance and replacement time of large equipment, reducing expensive 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, dents 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 SAA6D114E 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 irreversible sealing failure for heavy-duty engines; 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 heavy-duty engine faults and reduce subsequent high maintenance costs.

SPECIFICATION

Item

Details

Product Model

6754-11-5142

Product Name

Sealing Gasket

Applicable Model

Komatsu engine SAA6D114E, suitable for Komatsu PC300-7/8, PC360-7/8, PC400-7/8 and other large heavy-duty excavators & engineering machinery

Applicable Parts

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

Product Material

High-purity Nitrile Butadiene Rubber (NBR) with high-strength metal skeleton reinforcement; Optional Fluororubber (FKM) version for extreme high-temperature and strong 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 SAA6D114E engine

Material Performance

NBR: Hardness 70±5 Shore A, oil resistance volume change rate ≤10%, tensile strength ≥20MPaFKM: Hardness 75±5 Shore A, oil resistance volume change rate ≤5%, tensile strength ≥22MPa

Operating Temperature

NBR version: -40℃ ~ 130℃FKM version: -20℃ ~ 220℃

Operating Pressure

≤2.0MPa (suitable for the conventional working pressure of SAA6D114E engine's lubrication, cooling, intake/exhaust and hydraulic connecting systems)

Applicable Medium

Engine oil, coolant, diesel oil, exhaust gas, gear oil, hydraulic oil and other common media of Komatsu SAA6D114E engine

Service Life

≥7000 hours under normal heavy-duty working conditions (FKM version ≥9000 hours)


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