721-47-12021 7214712021 Seal, Step of WA180-3 WA470-6
1. Quick Details of seal 721-47-12021:
| Part NO. | 721-47-12021 |
| Machine | Excavator |
| Size | OEM |
| Material | Carbon filled PTFE |
| Type | RING SEAL |
2. 721-47-12021 parts on group :
| NO. | PART NO. | PRAT NAME | QTY |
| 1 | 721-10-12021 | CYLINDER | 1 |
| 2 | 721-89-10054 | PLATE, SPECIFICATION | 1 |
| 3 | 721-89-10100 | COVER | 1 |
| 4 | 721-29-12010 | COVER,TOP | 1 |
| 5 | 07000-12100 | O-RING | 1 |
| 6 | 707-35-91020 | RING,BACK-UP | 1 |
| 7 | 07000-15090 | O-RING | 1 |
| 8 | 721-36-10011 | PISTON | 1 |
| 9 | 721-47-12010 | SEAL,RING | 1 |
| 10 | 721-88-12010 | RING,BACK-UP | 2 |
| 11 | 07156-01012 | RING,WEAR | 2 |
| 12 | 721-47-12021 | SEAL,STEP | 1 |
| 13 | 721-89-12011 | VALVE,GAS | 1 |
3. 721-47-12021 picture:
4. Service part number :
| PART NO. | PART NO. | Part NO. |
| 707-99-67760 | 707-98-39610 | 707-98-62120 |
| 707-99-59430 | 707-98-25820 | 707-98-36590 |
| 707-98-26560 | 707-98-25830 | 707-98-36600 |
| 707-98-26570 | 707-98-25870 | 707-98-36630 |
| 707-98-26580 | 707-98-38520 | 707-98-67100 |
| 707-51-12860 | 707-98-38520 | 707-98-67110 |
| 707-51-12110 | 707-51-20080 | 707-98-26441 |
5. FAQ
Q: Which construction machine is part number 721-47-12021 compatible with?
A: Part number 721-47-12021 is developed for excavator hydraulic cylinder piston assembly.
Q: Could you tell me the part name and product category of 721-47-12021?
A: The part name is piston seal ring and it falls into piston seal ring category.
Q: What kind of material makes up this piston seal ring?
A: It is made of carbon filled PTFE for excellent wear and pressure resistance.
Q: What is the main working purpose of this piston seal ring?
A: It keeps hydraulic pressure stable and stops oil cross-leakage across the piston.
Q: Where do we install this piston seal ring on the cylinder?
A: It is placed into the piston groove inside the hydraulic cylinder barrel.
Q: What standout benefits does this seal ring bring in operation?
A: It delivers low friction and good dimensional stability under fluctuating pressure.
Q: Does this seal fit the heavy-duty continuous working of excavator?
A: Yes, it is engineered to adapt to frequent load changes on excavator.
Q: Can this part be used for hydraulic cylinder rebuild projects?
A: Yes, it is a standard replacement part for excavator cylinder rebuild work.
6. Exhibition and Wearhous
Oil seals,Hydraulic Seals, Cylinders Seal Kits, And More
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.