Aftermarket Seal Kit fit MSB Hydraulic Rock Breaker
Durable MSB Hydraulic Breaker Seal Kit built for heavy-duty applications. Designed to prevent leaks, protect hydraulic systems, and ensure smooth operation of MSB breakers across multiple models.
| Material | NBR/ PTFE/ ACM/ VMQ/ FKM/ HNBR/ EPDM/ Silicone and etc |
|---|---|
| MOQ | 5 Pieces |
| Pressure | Up to 690bar(10000psi) |
| Working Temperature | -40–120℃(according to the material) |
| Color | Black/Orange/Brown/White/Brown |
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Kinton Seals is trusted by professionals worldwide for providing high-quality seal kits for excavators, dozers, loaders, and other heavy machinery, ensuring reliable performance and long-lasting durability.
Hydraulic breakers from MSB are widely used in demanding industries such as quarrying, roadwork, and mining. To maintain their full performance, a reliable seal kit is essential. The MSB Hydraulic Breakers Seal Kit provides a complete sealing solution that restores hydraulic integrity, prevents fluid leakage, and protects key components from dust and contamination. With these seals installed, your breaker operates with greater consistency and reduced risk of downtime.
OEM Fitment & Cross Reference Seals
The MSB seal kit is manufactured according to OEM specifications, making it suitable for a wide range of breaker models such as:
| Part Numbers | |||||||
|---|---|---|---|---|---|---|---|
| MSB35AT | MSB45AT | MSB200 | MSB220 | MSB225 | MSB250 | MSB300 | MSB400 |
| MSB450 | MSB500 | MSB550 | MSB600 | MSB700 | MSB800 | MSB810 | MSB900 |
| SAGA120 | SAGA30 | SAGA40 | SAGA45 | SAGA50 | SAGA55 | SAGA80 | SAGA100 |
| SAGA120 | SAGA180 | SAGA200 | SAGA210 | SAGA220 | SAGA250 | SAGA270 | SAGA300 |
| SAGA330 | SAGA430 | SAGA500 | |||||
For easy selection, we also support cross reference seals. Customers can provide an OEM part number or kit code, and we will match the correct replacement kit. This reduces guesswork, eliminates compatibility issues, and ensures a perfect fit for your equipment.
Engineering Standards & Quality Control
Our Hydraulic Breaker Seal Kits are produced with OEM-level precision and go through a strict quality assurance process:
Precision Material Weighing
Each raw material block is carefully weighed with high-accuracy equipment before processing. This ensures that every seal ring starts with the exact material volume required for its specific size and application, preventing inconsistencies in density or performance.
Mold Preparation & Material Placement
After weighing, the prepared material is positioned onto the appropriate mold. Our workshop is equipped with a wide variety of molds to match different seal ring diameters and cross-sections. The correct mold selection guarantees precise shaping, while careful placement avoids defects such as uneven thickness.
High-Pressure Compression Molding
The molds are then set under specialized compression machines, where controlled pressure and temperature are applied. This process allows the material to be fully formed into a durable seal with consistent hardness and elasticity. Strict monitoring ensures every batch meets dimensional accuracy and structural integrity.
Rigorous Quality Inspection
Each batch of seals undergoes rigorous testing after molding. Technicians check for dimensional accuracy, surface smoothness, hardness, and sealing resilience. Any defective products are filtered out, ensuring that only seals with stable performance and long service life proceed to packaging.
These standards guarantee reliable sealing even under the extreme shock loads of breakers.
Seal Placement
Seals are strategically installed in piston, cylinder, valve, and tie rod areas of breakers. They work together to:
- Prevents leakage of hydraulic oil under high pressure.
- Protecting internal components from dust, water, and abrasive particles.
- Provides smooth piston and connecting rod movement and consistent impact force.
- Reduces wear on metal components by maintaining proper lubrication.
Seals are strategically placed in the piston, cylinder, tie rods, and valve areas, ensuring full hydraulic protection and preventing premature wear of critical components.
Material Overview for Seal Kits
Every component in this seal kit is produced from high-strength rubber compounds, advanced polyurethane, and PTFE. These materials are selected for their resistance to hydraulic oil, extreme pressure, and rapid piston movement. Unlike ordinary seals, MSB-specific kits are designed to maintain elasticity and dimensional stability even under continuous heavy impact, guaranteeing long-term reliability in tough environments.
Nitrile Rubber Buna(NBR, BUNA-N)
Temperature Range:-30 to 125 ℃
Hardness:60-90 Shore A
Color: Black
Use: Oil & Water Resistance Situation Advantage: Excellent oil resistance, performance and stability, widely used, cheaper
Fluororubber(FKM,FPM)
Temperature Range:-20 to 250℃
Hardness:70-90 Shore A
Color: Black/Brown/Green
Use: Oil & Chemical Resistance Situation
Advantage: Wear resistance, acid and alkali resistance, high temperature resistance situation
Silicone (VMQ )
Temperature Range: -60 to 225 ℃
Hardness: 50-70 Shore A
Color: Red/Black/Blue/White/Transparent, etc
Use: Heat& Food Situation(FDA, RoHS Approved)
Advantage: Good heat resistance, cold resistance, lubrication oil resistance, water resistance safety & reliable to human body
Ethylene Propylene Rubber(EPDM, EPM)
Temperature Range:-50 to 150 ℃
Hardness: 60-90 Shore A
Color: Black
Use: Ozone, water vapor situation
Advantage: Excellent oxidation resistance ozone resistance and erosion resistance
Perfluoroelastomer(FFKM, FFPM)
Temperature Range: -42 to 327 ℃
Hardness:60-95 Shore A
Color: Black / White
Advantage: Long-term, proven performance, can mean less frequent seal changes, repairs and inspections, increasing process and equipment uptime in productivity and yield.
Neoprene Rubber(CR )
Temperature Range:-30 to 125 ℃
Hardness:60-90 Shore A
Color: Black
Use: Oil & Water Resistance Situation Advantage: Excellent oil resistance, performance and stability, widely used, cheaper
This carefully balanced material combination ensures seals withstand heavy-duty use while maintaining flexibility and resilience.
Key Advantages
- Reliable Oil Retention – Maintains optimal hydraulic pressure during operation.
- Wear Protection – Shields pistons, cylinders, and bushings from premature damage.
- Extended Service Life – Keeps breakers running longer with fewer interventions.
- Easy Replacement – Designed for simple installation, minimizing downtime.
- Adaptable Use – Suitable for construction, demolition, quarrying, and mining work.
Application Scenarios
MSB breakers are used globally in high-impact environments, and these seal kits are engineered to support that demand. Whether you are demolishing reinforced concrete, breaking oversized rocks, or performing trenching work, the seal kit guarantees that your breaker delivers stable power without hydraulic loss.
Packaging & Supply
Each MSB Hydraulic Breaker Seal Kit is carefully sorted, labeled, and sealed in protective packaging to ensure safe delivery. Bulk shipments can be palletized for export, and customized labeling or branding can be arranged for distributors and OEM partners.
At Kinton Seals, we understand that reliable delivery is just as important as product quality. Our goal is to ensure that every order of Seal Kits for excavators, bulldozers, wheel loaders, and other heavy machinery reaches our customers safely, on time, and in perfect condition.
Packaging & Protection
- Standard Export Packaging – Each seal kit is carefully packed in moisture-proof and dust-proof bags, ensuring seals remain clean and undamaged during storage and transportation.
- Layered Protection – Kits are placed in sturdy cartons, and for bulk shipments, cartons are further reinforced with pallets and stretch film to minimize impact during handling and transit.
- Customization Options – We provide OEM/ODM packaging services, including branded boxes, barcodes, and special instructions, helping partners strengthen their brand presence in local markets.
- Extra Protection – For bulk shipments, cartons and pallets are reinforced to reduce the risk of damage in transit.
Order Processing & Lead Time
- Standard Seal Kits – For large quantity orders, lead time is usually 7–10 working days, as each kit requires precise matching of every seal, followed by labeling and packaging.
- Custom Seal Kits – For tailored requirements or non-standard models, production and assembly typically take 15–30 days, especially if new tooling or mold development is required.
- Sample Orders – Small batch or sample kits can often be prepared faster, subject to stock availability.
Delivery Options
- Air Freight for urgent orders
- Sea Freight for bulk shipments
- Courier Express (DHL, FedEx, UPS) for small packages and samples
Quick Quote Request
Kinton Seals is trusted by professionals worldwide for providing high-quality seal kits for excavators, dozers, loaders, and other heavy machinery, ensuring reliable performance and long-lasting durability.
