When it comes to Komatsu HD785 dump trucks operating in demanding mining and construction environments, every component plays a vital role in ensuring machine efficiency and uptime. One of the most critical parts in the final drive system is the floating seal. The MASSCoT Floating Seal with part number MCT42/00022, equivalent to Komatsu 428-33-00022, is specifically engineered for Komatsu HD785 machines to provide exceptional sealing performance, long service life, and superior resistance to wear.
If you are seeking a high-quality, cost-effective alternative to OEM seals, MASSCoT delivers precision, reliability, and value—all engineered into one rugged component.
What Is a Floating Seal?
A floating seal, also known as a duo cone seal or toric seal, is used to prevent contamination and retain lubricants in rotating parts like the final drive (axle segment) of off-highway dump trucks. It plays a key role in:
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Protecting internal components from abrasive external materials like dust, sand, and mud
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Sealing oil and grease inside the axle assembly
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Maintaining proper lubrication to reduce internal friction and heat
In mining conditions, where heavy load and abrasive materials are constant challenges, a durable and precisely engineered floating seal becomes essential.
MASSCoT Floating Seal for HD785 – Precision You Can Trust
The MASSCoT floating seal is designed to be a direct-fit alternative to Komatsu part number 428-33-00022, offering superior performance at a more affordable price. MASSCoT’s reference number for this product is MCT42/00022.
Here’s why it stands out:
– High Precision Engineering
MASSCoT seals are produced using high-grade alloy castings and fine-tolerance machining to ensure excellent concentricity and surface finish. This results in a tight, even seal that minimizes leak paths and maximizes service life.
– Premium Elastomer Compounds
The elastomer toric rings are made from advanced rubber materials that resist deformation, pressure fatigue, and temperature swings, ensuring the seal remains effective in both hot and cold climates.
– Extended Service Life
Thanks to a low-friction sealing surface and a robust pressure-compensation system, MASSCoT floating seals maintain their performance even after thousands of hours in the field.
– Easy Installation
Each MASSCoT floating seal is engineered for easy replacement and a perfect fit on the Komatsu HD785 final drive assembly, reducing labor costs and installation time.
Applications – Komatsu HD785 Dump Truck (Final Drive / Axle Segment)
The Komatsu HD785 is a high-capacity dump truck designed for mining and quarry operations. It uses heavy-duty axle systems that demand reliable sealing solutions to handle:
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Constant torque
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Uneven terrain
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Wet and abrasive environments
The MASSCoT MCT42/00022 floating seal is specifically designed for these high-stress applications, protecting the internal gears and bearings of the final drive from contamination and lubricant loss.
Why Choose MASSCoT Floating Seals?
When it comes to heavy equipment parts, performance and longevity are crucial. MASSCoT seals are engineered to provide both, delivering value for operators and maintenance teams.
Here’s what sets MASSCoT apart:
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Strict Quality Control: Every seal is tested for roundness, hardness, and surface finish.
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Reliable Sourcing: MASSCoT seals are produced in ISO-certified facilities with global distribution support.
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Customer-Oriented Support: Technical guidance is available for installation and application-specific recommendations.
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Cost Efficiency: MASSCoT offers high-quality seals at a fraction of the OEM price—without compromising on performance.
Maintenance Tip: When to Replace a Floating Seal?
Replace your HD785 floating seals when you observe:
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Visible oil leaks around the axle
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Excessive play in the final drive
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Contamination in the oil (water/dirt presence)
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Abnormal noises from the rear axle system
Timely replacement prevents further damage and prolongs the life of your axle and drive components.
Get Genuine Quality with MASSCoT
Ready to replace your Komatsu HD785 floating seal? Choose MASSCoT’s MCT42/00022, the trusted alternative to Komatsu 428-33-00022. Built to last and priced competitively, MASSCoT gives you the reliability your operation demands.
📞 Contact us today to request a quote or place your order. Keep your machines running strong—with MASSCoT precision parts.
Product Summary
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Product: Floating Seal
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Application: Komatsu HD785 Final Drive / Axle Segment
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OEM Reference: Komatsu 428-33-00022
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MASSCoT Part Number: MCT42/00022
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Material: Base material using the
same grade as Genuine -
Condition: New, high-precision aftermarket product
Contact Us
Phone: +62 852 1932 6929
Email: sales@sipa.co.id
Website: sipa.co.id
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