Guangzhou Opal Machinery Parts Operation Department vivianwenwen8@gmail.com 86-135-33728134
Product Details
Place of Origin: China
Brand Name: OUB
Certification: ISO9001
Model Number: 8M-4390
Payment & Shipping Terms
Minimum Order Quantity: 10
Price: Negotiable
Packaging Details: PP Bag Inside.outer is carton with film wrapped.
Delivery Time: Within 5-15 days after getting your desposit
Payment Terms: L/C,D/A,D/P,T/T,Western Union
Supply Ability: 1000Pcs
Part No.:: |
8M-4390 |
Part Name:: |
O RING |
Machine: |
Wheel Type Bulldozer |
Material: |
NBR |
Color: |
BLACK |
Model: |
589 594H PL83 PL87 |
Part No.:: |
8M-4390 |
Part Name:: |
O RING |
Machine: |
Wheel Type Bulldozer |
Material: |
NBR |
Color: |
BLACK |
Model: |
589 594H PL83 PL87 |
1. Quick Details of seal 8M-4390:
| Part NO. | 8M-4390 |
| Machine | Wheel type bulldozer |
| Size |
3.53 x 56.74mm |
| Material | NBR |
| Oil seal type | O RING |
2. 8M-4390 picture:
![]()
3. Service part number :
| PART NO. | PART NO. | Part NO. |
| 1672235 | 8E-5742 | 8C5176 |
| 7M8485 | 6J6436 | 1790464 |
| 2287089 | 1448299 | 277-9940 |
| 617540 | 4420366 | 152-3968 |
| 335879 | 1011983 | 326-7289 |
4. FAQ
Q: What is the part number of this sealing spare part for wheel excavator?
A: Its part number is 8M-4390, and it falls into the o-ring category.
Q: Which construction machine does the 8M-4390 o-ring suit for overhaul and component replacement?
A: This 8M-4390 o-ring is specially produced for wheel excavator brake hydraulic assemblies.
Q: What raw material is used to manufacture this o-ring?
A: It is made of fluorine rubber, which boasts outstanding aging resistance and brake fluid compatibility.
Q: What core sealing task does this o-ring take on the wheel excavator?
A: It seals the brake hydraulic chamber to hold braking pressure and prevent fluid leakage during travel.
Q: Where is this o-ring commonly fitted on the wheel excavator?
A: It is mostly installed on brake caliper joints and brake hydraulic valve body grooves.
Q: What advantage does fluorine rubber bring for wheel excavator brake systems?
A: It can withstand temperature changes from repeated braking and resist degradation from brake fluid.
Q: What risk will arise once this o-ring loses sealing performance?
A: Brake pressure will drop, and the braking response will become slow and unreliable.
5. Exhibition and Wearhous
![]()
![]()
![]()
Oil seals,Hydraulic Seals, Cylinders Seal Kits, And More