| Component Name |
Material Specification |
Standard |
Primary Function |
| Piston Seal |
Premium Polyurethane |
ISO 7425-1 |
Main dynamic pressure seal; maintains pressure between cylinder chambers -2 |
| Rod Seal |
Cast Polyurethane Composite |
ISO 6547 |
Primary rod sealing; prevents hydraulic oil from leaking out of the cylinder -2 |
| Wiper/Scraper |
Heavy-Duty Polyurethane |
ISO 6195 |
Contaminant exclusion; blocks dirt and debris from entering the cylinder -2 |
| Wear Ring/Guide Band |
Reinforced PTFE |
- |
Piston/rod guidance; keeps moving parts aligned and prevents metal-to-metal contact -2 |
| Buffer Ring |
Polyurethane (CU) |
- |
Absorbs pressure spikes and extends rod seal life -2 |
| O-Ring Set |
Nitrile Rubber (NBR) |
AS568A/ISO 3601 |
Static sealing for gland, end cap, ports, and fittings |
| Backup Rings |
Engineering-Grade Nylon |
- |
Anti-extrusion protection for high-pressure applications |
| Special Seals |
As per OEM design |
- |
Application-specific seals for particular cylinder configurations |
Frequently Asked QuestionsA. When will get the items after I place order?
Q. Once your payment is confirmed,we will arrange the goods within 1~4 days; if not in stock, we will inform you before placing the order?
A. If I only know the excavator model, but can not offer parts No.,what should I do ?
Q. If possible, you can send us pictures of old products, nameplate or the size for reference.
A. How can you guarantee the quality??
Q. We will 100% test the goods before delivery. We also support video inspection.
A. How long will it take to delivery to my address??
Q. The normal delivery time is 3-7 days, depending on which country you are in.?
A : Which delivery method will you choose?
Q : By sea, air or express(DHL,Fedex,TNT, UPS, EMS etc.)，Sometimes we will arrange as the customer's demand.
A: What's package? Can you give me the package according my requirement??
Q. We usually packed by standard exported box or carton. And yes we can pack as per your requirement.
A: Can the price be cheaper?
Q: Of course, you will be offered a good discount for a big amount.
A: Why should I choose to buy from you?
Q:Our advantages: 100% quality assurance, develop and manufature follow original ones;Quick response within 24 hours; Small order allowed;Reasonable stock and timely delivery;Neutral packing, customized packing are allowed. Positive customer feedback from abroad market;Excellent after-sales service.
A : Which payment terms can you accept?
Q : Paypal. Western Union, Bank Transfer, T/T...
