4C4784 Hydraulic Breaker Oil Seal O Ring Kit Corrosion Resistant HBK60 HBK70 Excavator Replacement Parts
4C4784 complete seal & O-ring repair kit is tailor-made replacement accessory for HBK60, HBK70 hydraulic rock breaker hammer, widely matched for excavator-mounted demolition hammer overhaul. This integrated kit solves hydraulic oil leakage, pressure drop and abnormal hammer power loss under heavy-load construction conditions.



| Item | Specification |
|---|---|
| Part Number | 4C4784 |
| Product Name | Hydraulic Breaker Seal & O Ring Kit |
| Fit Breaker | HBK60, HBK70 Hydraulic Hammer |
| Application | Excavator Mounted Rock Breaker Repair |
| Main Material | NBR, PU, PTFE Composite Rubber |
| Feature | Corrosion Resistant, Wear Resistant, High Pressure Resistant |
| Kit Contents | Rod Seal, Piston Seal, Buffer Seal, Dust Wiper, O-Rings, Backup Rings |
| Working Temperature | -30℃ ~ +120℃ |
| Package | Individual Plastic Box + Export Carton |
| Warranty | 12 Months |
| Part Number | Applicable Model | Feature |
|---|---|---|
| 4C4784 | HBK60 HBK70 | High corrosion resistance |
| 4C4782 | HBK10 HBK20 HBK30 | Standard general type |
| 4C4783 | HBK40 HBK50 | Medium load type |
| 4C4785 | HBK80 HBK90 HBK100 | Heavy duty high pressure type |
Please feel to share the specific models you're interested in ,and i'll provied you with favorable pricing.Thank you!
Why choose us?
Certifications & Quality
- ISO 9001 certified.
- 100% pressure, flow, and leakage tested before shipment to ensure quality.
- Comply with construction machinery hydraulic component industry standards.
Our Advantages
- 10+ years of professional experience in manufacturing excavator hydraulic parts, mature technology, stable quality.
- Sufficient inventory, ready stock for popular models, fast delivery.
- Support OEM/ODM customization, develop special models per customer requirements.
- Complete after-sales team, provide technical consultation, installation guidance, troubleshooting.
After-Sales Service
- Free replacement or repair for non-human quality issues within warranty period.
- Provide technical support for installation, commissioning, and operation.
- Lifetime supply of wearing parts and maintenance services at cost price.


HERE IS THE ANSWER!
Q1:How long is the warranted time? A:For natural broken, 3 months. Guarantee genuine parts.
Q2: What's payment you can accept? A:T/T, WECHAT,PAYPAL.
Q3: What's package? Can you give me the package according my requirement? A:Yes, Original packing or Neutral packing with wooden box or carton.
Q4: How about the lead time? A: (1) ln stock: 1-7 days.Always in 72 hours. (2) Out of stock: lt's according to your quantity, and we have cooperated with factory. We will let you know when we quote.
Q5: What's the shipping way you can offer? A: (1) Big order: By sea or by air.(It can reduce the costs). (2) Small order: DHL,TNT,UPS,FEDEX,EMS,ARAMEX.
Q6: What's the terms of the transaction? A:EXW,FCA,FAS,FOB, C&F,CIF,CPT,CIP,DAF,DES,DDP.
Q7: Do you accept small order? A:Yes, small order can accept.
Q8: What's brand you can offer in your company? A: (1)OEM,100% GENUINE PARTS, COPY(Made in China). (2)GENUINE PARTS.
- If you place order directly without any communication with us,please remark the Part Number exactly you need if possible!
- Normally would be sent in neutral package, if need orignal package please contact us before placing orders.
- All the are blank new without program, if you want program please send us your Engine Serial Number and old code we will confirm whether the program available or not.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
