Highlight:
Small Crawler Excavator Hydraulic Valve O-ring Kit
, OEM Replacement Hydraulic Repair O-ring Seals
, R140-9 Excavator Hydraulic Valve Seal Kit
1. Quick Details of seal 242-4313:
| Part NO. |
242-4313 |
| Machine |
Bulldozer |
| Size |
5.7 mm thickness |
| Material |
Ultra-light PTFE with glass fiber filler |
| Oil seal type |
O RING |
2. 242-4313 parts on group :
| NO. |
PART NO. |
PRAT NAME |
QTY |
| 1 |
242-4313 |
SEAL |
1 |
| 2 |
341-3191 |
SEAL |
1 |
| 3 |
095-1633 |
SEAL |
1 |
| 4 |
198-2643 |
SEAL |
1 |
| 5 |
335-8964 |
SEAL |
1 |
| 6 |
8F-8733 |
SEAL |
1 |
| 7 |
9X-3579 |
SEAL |
1 |
| 8 |
9X-3601 |
SEAL |
1 |
| 9 |
116-3589 |
SEAL |
1 |
| 10 |
335-8966 |
SEAL |
1 |
3. 242-4313 picture:
4. Service part number :
| PART NO. |
PART NO. |
Part NO. |
| 3F1547 |
5P6718 |
095-1750 |
| 915024 |
6V3835 |
168-3504 |
| 3D2824 |
8T6444 |
9X-7680 |
| 3J1907 |
8M5254 |
109-1293 |
| 3821152 |
5P6393 |
109-1294 |
| 6E1572 |
6V1196 |
71-8171 |
| 2H3934 |
6V5759 |
153-4906 |
| 2536010 |
8L5189 |
206-9290 |
| 3215628 |
2257738 |
295-9695 |
| 2590891 |
175-7895 |
249-6657 |
| 1411774 |
6V-1196 |
095-1603 |
5. FAQ
Q: What special fiber filler is added to the HNBR raw material of these main circular sealing rings?
A: Fine silica fiber powder is evenly mixed into HNBR base rubber. It can slow down permanent deformation caused by long-term cyclic extrusion inside hydraulic valves and prevent volume expansion after long contact with high-pressure hydraulic fluid.
Q: What visual color and surface texture differences exist between the O-rings and auxiliary support rings inside this package?
A: All HNBR O-rings are matte solid black with smooth fine grain surface. The PTFE backup rings are milky off-white with slightly matte slippery texture, and flat rubber gaskets are dark grey for easy classification during valve maintenance.
Q: What multi-size matched combined structure does this hydraulic valve O-ring set adopt for small crawler excavators?
A: This is a complete mixed-size matching assembly instead of single-size separate O-rings, including dozens of standard circular sealing rings, matched PTFE anti-extrusion rings and thin flat gaskets for all valve core sealing positions.
Q: What stable working temperature range can this full set of sealing rings maintain normal sealing performance?
A: Its applicable temperature range is -155°C to 378°C, suitable for cold mountain winter construction and continuous high-frequency hydraulic operation at urban building excavation sites.
Q: Can this O-ring assembly be used universally on all types of construction machinery hydraulic systems?
A: It is specially sized and formulated for small crawler excavator multi-way hydraulic valves only, and cannot adapt to bulldozer final drive systems, road grader hydraulic cylinders or large mining excavator main pumps.
Q: What peak instantaneous hydraulic pressure can these circular sealing rings withstand without extrusion failure?
A: The matching combination of HNBR O-rings and PTFE back-up rings can resist instantaneous hydraulic pressure up to 6.1MPa, effectively buffer pressure surges from frequent valve switching and avoid oil leakage.
Q: What common construction projects rely on this O-ring kit for regular hydraulic system maintenance?
A: It is widely used for routine overhaul of hydraulic control valves on small crawler excavators, including residential foundation digging, small ditch dredging, green land leveling and rural road widening projects.
6. Exhibition and Wearhous
Oil seals,Hydraulic Seals, Cylinders Seal Kits, And More
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