7X-2729 7X2729 Wholesale Price Hydraulic Cylinder Seal Kit 826B
1. Quick Details of seal 7X-2729:
| Part NO. |
7X-2729 |
| Machine | 826B |
| Size | OEM |
| Material | PU |
| Oil seal type |
DUST SEAL |
2. 7X-2729 parts on group :
| NO. | PART NO. | PART NAME | QTY |
| 1 | 8C-9125 | SEAL | 1 |
| 2 | 4J-3420 | SEAL | 1 |
| 3 | 5J-5020 | SEAL | 1 |
| 4 | 2K-4096 | SEAL | 1 |
| 5 | 8T-4958 | SEAL | 1 |
| 6 | 8C-9134 | SEAL | 1 |
| 7 | 5J-8225 | SEAL | 1 |
| 8 | 6V-1934 | O-RING | 1 |
| 9 | 5F-3144 | O-RING | 1 |
3. 7X-2729 picture:
4. Service part number :
| PART NO. | PART NO. | Part NO. |
| 707-99-44270 | 707-99-44230 | 707-51-14630 |
| 707-99-44280 | 707-99-44270 | 707-51-14640 |
| 707-99-44290 | 707-99-44280 | 707-51-14850 |
| 707-99-44310 | 707-99-44290 | 707-51-14650 |
| 707-99-44340 | 707-99-44310 | 56B-50-34650 |
| 707-99-44380 | 707-99-44340 | 707-51-16650 |
| 707-99-45040 | 707-99-44380 | 707-51-16630 |
| 707-99-45220 | 707-99-45040 | 707-51-16640 |
| 707-99-45230 | 707-99-45220 | 707-51-16850 |
| 707-99-45250 | 707-99-45230 | 707-51-17630 |
| 707-99-45310 | 707-99-45250 | 707-51-17640 |
| 707-99-46030 | 707-99-45310 | 707-51-18640 |
| 707-99-46120 | 707-99-46030 | 707-51-19640 |
| 707-99-46130 | 707-99-46120 | 707-51-19630 |
| 707-99-46200 | 707-99-46130 | 707-51-20850 |
5. FAQ
Q:Why use these materials together?
A:PU seals handle the harsh dynamic conditions of construction equipment cylinders. NBR O-rings ensure leak-free static connections. Wear rings protect the cylinder bore and rod from premature wear, while PTFE backups extend the life of main seals under extreme pressure. Together, they maximize the cylinder’s service life.
Q:Are these seals compatible with all hydraulic fluids?
A:They work with most mineral-based hydraulic oils, anti-wear fluids, and biodegradable oils. For synthetic oils or continuous high-temperature use, we can offer upgraded FKM (Viton) seals on request.
Q: What are common causes of premature seal failure?
A:The most common issues are improper installation (twisted seals, damaged lips), contamination (dirt/metal shavings), scratches on the cylinder bore/rod, operating beyond rated pressure/temperature, or over-tightening the gland bolts.
6. Exhibition and Wearhous
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