31Y1-21100 31Y121100 Buy Hyundai HCE SEAL KIT 31Y1-21100 genuine, new aftermarket tractor parts with delivery R320LC7 R320LC7A
1. Quick Details of seal 31Y1-21100 :
| Part NO. | 31Y1-21100 |
| Machine | Crawler Excavator |
| Size | OEM |
| Material | Oil seal ,Seal ring |
| Oil seal type |
SEAL KIT |
2.31Y1-21100 parts on group :
| NO. | PART NO. | PRAT NAME | QTY |
| 1 | 31N9-50121 | CYLINDER ASSEMBLY,LH | 1 |
| 2 | 31N9-50122 | BOOM CYL/D ASSEMBLY | 1 |
| 3 | 31N9-50111 | CYLINDER ASSEMBLY,RH | 1 |
| 4 | 31N9-50112 | BOOM CYL/D ASSEMBLY | 1 |
| 5 | 31Y1-19041 | BOOM CYLINDER SUB | 1 |
| 6 | 31Y1-19042 | CYLINDER W/O PIPE | 1 |
| 7 | 31Y1-20930 | TUBE ASSY | 1 |
| 8 | 31Y1-20980 | ROD ASSY | 1 |
| 9 | 31Y1-20981 | ROD ASSEMBLY | 1 |
| 10 | 31Y1-21010 | GLAND | 1 |
| 11 | S732-105045 | DD2 BUSH | 1 |
| 12 | Y191-112000 | RING-SNAP | 1 |
| 13 | Y220-105011 | SEAL-ROD | 1 |
| 14 | Y180-105120 | RING-BACK UP | 1 |
| 15 | Y240-105013 | RING-BUFFER | 1 |
| 16 | Y110-105011 | WIPER-DUST | 1 |
| 17 | Y190-121000 | RING-SNAP | 1 |
| 18 | S631-140004 | O-RING | 1 |
| 19 | S641-140003 | RING-BACK UP | 1 |
| 20 | 31YC-23060 | RING-CUSHION | 1 |
| 21 | 31Y1-08780 | PISTON | 1 |
| 22 | S632-090004 | O-RING | 1 |
| 23 | S642-090003 | RING-BACK UP | 2 |
| 24 | Y420-150000 | SEAL-PISTON | 1 |
| 25 | Y310-150100 | RING-WEAR | 2 |
| 26 | Y440-150000 | RING-DUST | 2 |
| 27 | 31YC-66071 | WASHER-LOCK | 1 |
| 28 | 31YC-61153 | NUT-LOCK | 1 |
| 29 | 31YC-61154 | NUT-LOCK | 1 |
| 30 | S109-200904 | BOLT-SOCKET | 12 |
| 31 | 31YC-11405 | BUSHING | 2 |
| 32 | Y000-100100 | SEAL-DUST | 4 |
| 33 | S114-080184 | SCREW-SET,HEX SOC HDLESS | 1 |
| 34 | 31Y1-21021 | BAND ASSEMBLY,LH | 1 |
| 35 | 31Y1-21031 | BAND ASSEMBLY,RH | 1 |
| 36 | 31Y1-21041 | BAND SUB ASSEMBLYLH | 1 |
| 37 | 31Y1-21051 | BAND SUB ASSEMBLY,RH | 1 |
| 38 | 31YC-32240 | BAND | 1 |
| 39 | S015-120452 | BOLT-HEX | 4 |
| 40 | S411-120002 | WASHER-SPRING | 4 |
| 41 | S071-023430 | U-BOLT | 2 |
| 42 | S201-101002 | NUT-HEX | 4 |
| 43 | S411-100002 | WASHER-SPRING | 4 |
| 44 | 31Y1-21061 | PIPE ASSEMBLY-R,LH | 1 |
| 45 | 31Y1-21071 | PIPE ASSEMBLY-R,RH | 1 |
| 46 | 31Y1-19171 | PIPE ASSY-LH | 1 |
| 47 | 31Y1-19181 | PIPE ASSY-RH | 1 |
| 48 | Y171-024004 | O-RING | 2 |
| 49 | S107-120554 | BOLT-SOCKET | 8 |
| 50 | 31Y1-21100 | SEAL KIT | 1 |
3. 31Y1-21100 picture:
4. Service part number :
| PART NO. | PART NO. | Part NO. |
| 707-35-52670 | 707-51-45640 | 707-99-75600 |
| 707-51-45640 | 707-51-11640 | 707-51-80640 |
| 707-35-52690 | 707-35-91100 | 707-98-36600 |
| 707-99-76230 | 707-51-11690 | 707-51-11640 |
| 707-99-76260 | 707-35-92020 | 707-98-25910 |
| 707-99-76300 | 707-35-92050 | 707-44-85150 |
| 707-99-77050 | 707-35-92300 | 707-44-90070 |
| 707-99-77090 | 707-35-92600 | 707-51-90650 |
| 707-99-77120 | 707-51-95640 | 707-51-95630 |
| 707-99-77130 | 707-51-60650 | 707-51-95640 |
| 707-51-65640 | 707-51-65630 | 707-51-95650 |
| 707-35-52780 | 707-51-60650 | 707-44-10911 |
| 707-51-70630 | 707-44-90180 | 707-44-11080 |
| 707-51-70650 | 707-44-90150 | 707-51-20250 |
| 707-99-77240 | 707-98-60121 | 707-35-52700 |
5. FAQ
Q: What common mistakes lead to early seal failure?
A: Skipping the deep cleaning step allows contamination to abrade and damage new seals. Twisting or overstretching seals during installation creates hidden damage that causes leaks immediately. Installing seals backwards, especially rod seals and piston seals, means they won’t hold pressure properly. Using the wrong lubricant can chemically attack the seals and cause premature failure. Forgetting to use an assembly sleeve can tear the seal lips during piston insertion.
Q: How long will a properly installed cylinder seal kit last?
A: If the hydraulic fluid is clean, installation is done correctly, and there’s no underlying mechanical damage, a high-quality kit can last between 5,000 and 10,000 operating hours. Contaminated oil, excessive side loads, or rod misalignment will significantly shorten this lifespan.
Q: Is it okay to reuse any old seals from the original kit?
A: It is strongly advised against reusing any old seals. Even if they appear undamaged, they lose elasticity over time and develop permanent deformation and hidden wear from being installed once. Always use every new seal in the kit for a reliable rebuild.
Q: Is it okay to reuse any old seals from the original kit?
A: It is strongly advised against reusing any old seals. Even if they appear undamaged, they lose elasticity over time and develop permanent deformation and hidden wear from being installed once. Always use every new seal in the kit for a reliable rebuild.
6. Exhibition and Wearhous
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