Looking for the best hydraulic seal kit for your excavator? We’ve researched and compiled a list of the top 10 reliable, durable, and easy-to-install kits to keep your machine running smoothly.
Hydraulic seal kits are essential for keeping your excavator running smoothly. They prevent leaks and ensure efficient operation, saving you time and money on repairs.
Choosing the right kit can be tricky with so many options available. We’ve done the research to bring you the best hydraulic seal kits for excavators, tailored to your needs.
From Bobcat to Caterpillar, we’ve got you covered. Discover reliable, durable, and easy-to-install kits that will keep your machine in top shape.
List of Top 10 Hydraulic Seal Kit For Excavator
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Czomoizc 7135559 Lift Cylinder Seal Kit Compatible with Bobcat Loader 773 S175 S185 S205 T190 Excavator 335 337 341 430 435 E14 E17 E17Z E35 E50 E55 Backhoe Loader B100 B200 B250 B300 BL275 |
This lift cylinder seal kit is perfect for Bobcat owners who need a reliable replacement for their loaders, excavators, or backhoe loaders. It’s easy to install and fits multiple models, making it a great choice for keeping your equipment running smoothly. |
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BUSY-CORNER 4C-4782 Seal O-Ring Kit, Nitrile 90, Hydraulic Hose Fitting Orings, Fits CAT Caterpillar Excavator 2701528 4C4782 Replacement |
This BUSY-CORNER Seal O-Ring Kit is perfect for anyone who needs reliable, high-quality O-rings for hydraulic hose fittings. It’s ideal for Caterpillar excavator owners or mechanics working on heavy machinery. |
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YIHETOP Hydraulic Cylinder Seal Kit 7137772 Compatible for Bobcat Excavator 319 320 321 322 323 Loader A220 A300 A770 MT85 5600 |
This YIHETOP Hydraulic Cylinder Seal Kit is perfect for Bobcat owners. It works with loaders, excavators, and utility vehicles. |
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JZGRDN Hydraulic Cylinder Seal Kit 7137945 7225639 Compatible with Bobcat 335 435 Excavator A770 S650 S750 S770 Skid Steer Loader T650 T750 T770 Compact Track |
This JZGRDN Hydraulic Cylinder Seal Kit is perfect for Bobcat owners who need a reliable replacement for their excavators or skid steer loaders. It’s easy to install and works great with models like the 335, 435, A770, S650, T650, and more. |
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LX Hydraulics 4C-4784 D-Ring Kit | SAE J2643 Certified NBR 90 Duro | Compatible with CAT Caterpillar Excavator Hydraulic Systems (Replaces 2701535 & 4C4784) | 80pc Oil-Resistant Hose Fitting Seals |
This LX Hydraulics D-Ring Kit is perfect for heavy equipment operators and maintenance teams who need reliable, long-lasting seals for CAT Caterpillar excavators. It’s ideal for those working in extreme conditions, ensuring leak-free performance and easy maintenance. |
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WQSING Hydraulic Cylinder Seal Kit 7225639 7137945 Compatible with Bobcat A770 S650 S750 S770 Skid Steer Loader T650 T750 T770 Compact Track 335 435 Excavator |
This WQSING Hydraulic Cylinder Seal Kit is perfect for Bobcat owners who need a reliable replacement for their skid steer loaders or compact track excavators. It’s compatible with models like A770, S650, S750, S770, T650, T750, T770, 335, and 435, making it a great fit for heavy-duty work. |
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5 Pack Hydraulic Seal Installation Tool Kit, Hydraulic Cylinder Piston Repair Seal Tools, U-Cup Rod Seal Installation Tool Kits, Upgraded Seal Twistor Install Tool Set with Pick and Hook Set |
This 5 Pack Hydraulic Seal Installation Tool Kit is perfect for anyone who works with hydraulic cylinders, O-rings, or flexible rod seals. Whether you’re fixing automotive, marine, or heavy machinery parts, this kit makes seal installation fast and easy. |
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BUSY-CORNER 4C-8253 Seal O-Ring Kit, Silicone 90, Hydraulic Hose Fitting Orings, Fits CAT Caterpillar Excavator 2701533 4C8253 Replacement |
This BUSY-CORNER 4C-8253 Seal O-Ring Kit is perfect for Caterpillar equipment owners who need reliable, high-heat, low-pressure seals. It’s ideal for torque converters, transmissions, and differentials. |
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Hydraulic Lift Cylinder Seal Kit fits Bobcat S150 S160 S510 S550 763 Skid Steer E32 E35 E42 E45 E55 Excavator Arm Bucket Replacement 7135557 6816535 | Arko |
This Hydraulic Lift Cylinder Seal Kit is perfect for Bobcat owners who need a reliable replacement for their skid steer or excavator. It’s easy to verify compatibility and restores hydraulic pressure for smooth operation. |
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BUSY-CORNER 4C-8253 Seal O-Ring Kit, Silicone 90, Hydraulic Hose Fitting Orings, Fits CAT Caterpillar Excavator 2701533 4C8253 Replacement |
This BUSY-CORNER 4C-8253 Seal O-Ring Kit is perfect for anyone who works on Caterpillar equipment. It’s ideal for high-heat, low-pressure jobs like torque converters, transmissions, and differentials. |
Detailed Reviews
Discover the top 10 Hydraulic Seal Kits for Excavators, carefully selected based on expert reviews and customer feedback. Each kit is evaluated for performance, durability, and value, ensuring you find the perfect fit for your needs. Whether you prioritize reliability or affordability, this guide simplifies your choice and helps you make a confident decision.
1. Czomoizc 7135559 Lift Cylinder Seal Kit Compatible with Bobcat Loader 773 S175 S185 S205 T190 Excavator 335 337 341 430 435 E14 E17 E17Z E35 E50 E55 Backhoe Loader B100 B200 B250 B300 BL275

The Czomoizc 7135559 Lift Cylinder Seal Kit is a reliable replacement for your Bobcat equipment. It fits loaders, excavators, and backhoe loaders. This kit ensures smooth and efficient operation.
It’s compatible with multiple models and comes with accurate sizing. Each kit is fully inspected before shipping, so you get quality you can trust.
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Perfect For:
This lift cylinder seal kit is perfect for Bobcat owners who need a reliable replacement for their loaders, excavators, or backhoe loaders. It’s easy to install and fits multiple models, making it a great choice for keeping your equipment running smoothly.
Ready to Purchase?
2. BUSY-CORNER 4C-4782 Seal O-Ring Kit, Nitrile 90, Hydraulic Hose Fitting Orings, Fits CAT Caterpillar Excavator 2701528 4C4782 Replacement

The BUSY-CORNER 4C-4782 Seal O-Ring Kit is a high-quality solution for hydraulic hose fittings. Made from Buna-N 90D (NBR) material, these O-rings are durable, heat-resistant, and oil-resistant, perfect for high-pressure applications.
This kit includes 32 different CAT OEM part numbers, covering almost all your needs. It’s ideal for sae stor & orfs fittings, code 61/62 flange O-Rings, and Caterpillar hydraulic hose fittings.
The heavy-duty storage case keeps O-rings organized and easy to carry. BUSY-CORNER offers 24/7 customer service for any questions. Quality and convenience in one kit!
| Pros | Cons |
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Perfect For:
This BUSY-CORNER Seal O-Ring Kit is perfect for anyone who needs reliable, high-quality O-rings for hydraulic hose fittings. It’s ideal for Caterpillar excavator owners or mechanics working on heavy machinery.
Ready to Purchase?
3. YIHETOP Hydraulic Cylinder Seal Kit 7137772 Compatible for Bobcat Excavator 319 320 321 322 323 Loader A220 A300 A770 MT85 5600

The YIHETOP Hydraulic Cylinder Seal Kit is a must-have for Bobcat owners. It fits many models, including loaders, excavators, and utility vehicles. This kit has the part numbers 7137772 and 6803474.
It works with Bobcat loaders A220, A300, A770, MT85, and 5600. It also fits Bobcat excavators 319, 320, 321, 322, and 323. Plus, it’s compatible with Bobcat utility vehicles 2300, 3450, and 3650.
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Perfect For:
This YIHETOP Hydraulic Cylinder Seal Kit is perfect for Bobcat owners. It works with loaders, excavators, and utility vehicles.
Ready to Purchase?
4. JZGRDN Hydraulic Cylinder Seal Kit 7137945 7225639 Compatible with Bobcat 335 435 Excavator A770 S650 S750 S770 Skid Steer Loader T650 T750 T770 Compact Track

Keep your Bobcat running smoothly with the JZGRDN Hydraulic Cylinder Seal Kit. This brand-new kit is specifically designed for Bobcat excavators and skid steer loaders.
It’s compatible with models like the 335, 435, A770, S650, T650, and more. The part numbers 7137945 and 7225639 ensure a perfect fit for your machine.
Need help? Contact us anytime for a quick response. We’re here to make your repair process easy and stress-free.
| Pros | Cons |
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Perfect For:
This JZGRDN Hydraulic Cylinder Seal Kit is perfect for Bobcat owners who need a reliable replacement for their excavators or skid steer loaders. It’s easy to install and works great with models like the 335, 435, A770, S650, T650, and more.
Ready to Purchase?
5. LX Hydraulics 4C-4784 D-Ring Kit | SAE J2643 Certified NBR 90 Duro | Compatible with CAT Caterpillar Excavator Hydraulic Systems (Replaces 2701535 & 4C4784) | 80pc Oil-Resistant Hose Fitting Seals

The LX Hydraulics 4C-4784 D-Ring Kit is SAE J2643 certified and made from NBR 90 Duro material. It’s compatible with CAT Caterpillar excavator systems, replacing parts like 2701535 and 4C4784. This kit includes 80 oil-resistant hose fitting seals for reliable performance.
The seals are engineered to withstand extreme conditions, from -65°F to +250°F. They offer 3x UV resistance and minimal oil swell, ensuring long-lasting durability. The anti-static design adds extra protection for your machinery.
This kit includes strategic quantities of seals, covering 98% of hydraulic failures on CAT excavators. It comes in a heavy-duty storage case with vibration-proof compartments and RFID-ready labels. The color-coded tags and QR-code tracking make maintenance simple and efficient.
| Pros | Cons |
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Perfect For:
This LX Hydraulics D-Ring Kit is perfect for heavy equipment operators and maintenance teams who need reliable, long-lasting seals for CAT Caterpillar excavators. It’s ideal for those working in extreme conditions, ensuring leak-free performance and easy maintenance.
Ready to Purchase?
6. WQSING Hydraulic Cylinder Seal Kit 7225639 7137945 Compatible with Bobcat A770 S650 S750 S770 Skid Steer Loader T650 T750 T770 Compact Track 335 435 Excavator

The WQSING Hydraulic Cylinder Seal Kit is a must-have for Bobcat owners. It fits many models, including loaders and excavators. This kit has everything you need for a smooth repair.
With part numbers 7225639 and 7137945, it’s easy to identify. The rod and bore sizes are clearly marked, ensuring a perfect fit. Get your machine running like new with this reliable seal kit.
| Pros | Cons |
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Perfect For:
This WQSING Hydraulic Cylinder Seal Kit is perfect for Bobcat owners who need a reliable replacement for their skid steer loaders or compact track excavators. It’s compatible with models like A770, S650, S750, S770, T650, T750, T770, 335, and 435, making it a great fit for heavy-duty work.
Ready to Purchase?
7. 5 Pack Hydraulic Seal Installation Tool Kit, Hydraulic Cylinder Piston Repair Seal Tools, U-Cup Rod Seal Installation Tool Kits, Upgraded Seal Twistor Install Tool Set with Pick and Hook Set

The 5 Pack Hydraulic Seal Installation Tool Kit is a must-have for anyone working with hydraulic cylinders. It includes three sizes of seal installation tools and a pick and hook set, covering most rod seal jobs from 0.87″ up.
Easy to use, saves time, and protects seals and cylinders. Perfect for automotive, marine, and heavy equipment repairs.
| Pros | Cons |
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Perfect For:
This 5 Pack Hydraulic Seal Installation Tool Kit is perfect for anyone who works with hydraulic cylinders, O-rings, or flexible rod seals. Whether you’re fixing automotive, marine, or heavy machinery parts, this kit makes seal installation fast and easy.
Ready to Purchase?
8. BUSY-CORNER 4C-8253 Seal O-Ring Kit, Silicone 90, Hydraulic Hose Fitting Orings, Fits CAT Caterpillar Excavator 2701533 4C8253 Replacement

The BUSY-CORNER 4C-8253 Seal O-Ring Kit is a must-have for Caterpillar equipment owners. It’s made of high-quality Silicone 90, ensuring durability and reliability. This kit is perfect for hydraulic hose fittings.
It includes 149 silicone O-rings in 32 popular sizes, covering all your needs. The yellow O-rings are specially designed for high-heat, low-pressure applications.
The heavy-duty storage case keeps everything organized and easy to carry. Plus, our customer service is here to help with any questions. Get this kit for hassle-free repairs!
| Pros | Cons |
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Perfect For:
This BUSY-CORNER 4C-8253 Seal O-Ring Kit is perfect for Caterpillar equipment owners who need reliable, high-heat, low-pressure seals. It’s ideal for torque converters, transmissions, and differentials.
Ready to Purchase?
9. Hydraulic Lift Cylinder Seal Kit fits Bobcat S150 S160 S510 S550 763 Skid Steer E32 E35 E42 E45 E55 Excavator Arm Bucket Replacement 7135557 6816535 | Arko

Hydraulic Lift Cylinder Seal Kit is a versatile solution for Bobcat equipment. It fits skid steers and excavators, ensuring a perfect match for your machine. This kit is designed for easy repair.
The wide compatibility covers many Bobcat models, from S150 to E55 series. It replaces OEM parts with precision, offering a leak-free fix. You get a complete set for a single cylinder overhaul.
Verify your cylinder size before ordering. This kit is tailored for 1.50-inch rods and 2.25-inch bores. Measure your hydraulic ram to ensure a perfect fit.
| Pros | Cons |
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Perfect For:
This Hydraulic Lift Cylinder Seal Kit is perfect for Bobcat owners who need a reliable replacement for their skid steer or excavator. It’s easy to verify compatibility and restores hydraulic pressure for smooth operation.
Ready to Purchase?
10. BUSY-CORNER 4C-8253 Seal O-Ring Kit, Silicone 90, Hydraulic Hose Fitting Orings, Fits CAT Caterpillar Excavator 2701533 4C8253 Replacement

BUSY-CORNER 4C-8253 Seal O-Ring Kit is a must-have for Caterpillar equipment owners. It’s a complete solution for hydraulic hose fitting needs.
This kit includes 149 silicone O-rings in 32 popular sizes, covering most Caterpillar equipment requirements. The Silicone 90 material offers high-temperature resistance and anti-static properties, making it ideal for torque converters, transmissions, and differentials.
With a heavy-duty storage case, keeping your O-rings organized and accessible is easy. Quickly find the right size and get back to work. Contact us for any questions or support.
| Pros | Cons |
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Perfect For:
This BUSY-CORNER 4C-8253 Seal O-Ring Kit is perfect for anyone who works on Caterpillar equipment. It’s ideal for high-heat, low-pressure jobs like torque converters, transmissions, and differentials.
Ready to Purchase?
Buying Guide
Hydraulic seal kits keep your excavator running smoothly by preventing leaks and ensuring efficient operation. Choosing the right one saves time and money on repairs.
Buying the Best Hydraulic Seal Kit for Your Excavator
Here’s what to consider when choosing the perfect hydraulic seal kit:
- Compatibility: Make sure the kit fits your excavator’s make and model. Check part numbers and specifications for a perfect match.
- Material Quality: Look for durable materials like Nitrile, Silicone, or NBR that resist heat, oil, and wear for long-lasting performance.
- Kit Contents: Ensure the kit includes all necessary seals and tools for a complete repair, saving you time and effort.
- Ease of Installation: Choose kits with clear instructions and tools for hassle-free installation, even for beginners.
- Storage and Organization: Opt for kits with heavy-duty cases to keep seals organized and easy to find when needed.
- Customer Support: Select brands offering reliable customer service for quick answers to your questions or concerns.
With these factors in mind, you’ll find the best hydraulic seal kit to keep your excavator in top shape.