SDLG E660FL E655H E675H E680H E690H E6135H Swing Motor Seal Kit Oil Seal Hydraulic Pump Excavator Hydraulic Repair Seals

SDLG E660FL E655H E675H E680H E690H E6135H Swing Motor Seal Kit Oil Seal Hydraulic Pump Excavator Hydraulic Repair Seals

Product Description

Feature of oil seal:

1.Long durability life.

2.Grind Piston diameter according to the assembly need.

3.Control piston tolerance range, make piston and cylinder body between the fit clearance to achieve the best effect .

4.Special specification piston according to the customers' request.

5.Most powerful impact strike , ,easy maintenance ,low price hydraulic breaker piston.

Huilian Machine professionally engaged in manufacturing various brand hydraulic hammers and spare parts, such as chisel,

frame, piston, front head and back head, inner and outer bush, rod pin, bolts and other supporting ancillary products. Our

company has perfect production equipment and test devices. The structure design of hammers is reasonable, raw material is

high quality steel, equipped with advanced processing equipment, exquisite heat treatment and grinding technology. Our

company is committed to hydraulic hammers development, production, marketing and related technical services. Company own

more than one hundred of professional mechanical engineer and first-class technical engineers. They have Professional technical

and experience, to provide quick and good after-sales service to our customers.

**Guardian of the Steel Behemoth's "Lifeline": The Unseen Oil Seal, The Visible Value**

When your excavator swings its powerful arm, moving earth and rock, you witness the surging power of the hydraulic system and the robust roar of the engine. But have you ever paid attention to the **oil seals**—those components hidden deep within its joints, working silently and unnoticed?

Though small, they are the **unsung heroes** guarding the value and life of the entire machine.

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#### **I. Small Seal, Massive Role: What Exactly Is It?**

An oil seal, seemingly a simple rubber ring or metal band, is in fact a precision critical sealing component. It is stationed at various rotating or reciprocating movement points of the excavator—such as hydraulic cylinders, travel motors, and swing mechanisms.

It has one sole mission: **"Guard the Borders".**
* **Internally**: It securely locks in lubricating oil and hydraulic fluid, ensuring core components operate under optimal lubrication.
* **Externally**: It firmly blocks the intrusion of all external contaminants like dust, mud, and moisture.

#### **II. The Cost of Neglect: Calculating the "Cost Bill"**

Neglecting a oil seal costing just tens or hundreds of dollars can trigger a "butterfly effect," leading to losses amounting to tens of thousands:

**1. Fluid Leaks: Visible "Bleeding"**
* **Direct Economic Loss**: Precious hydraulic fluid and lubricating oil continuously seep out, akin to the equipment "bleeding," resulting in a direct drain on net profits.
* **Performance Drop**: Insufficient oil pressure leads to slow, weak movements, causing a sharp decline in work efficiency, project delays, and loss of reputation and opportunity.

**2. Component Wear: The Unseen "Internal Injury"**
* **Core Component Failure**: Ingress of dust acts like "sandpaper," grinding away at precision surfaces like hydraulic cylinder walls and bearing races. The failure of a few-hundred-dollar seal can be enough to prematurely scrap core components worth thousands.
* **Chain Reaction**: Wear on a single part often triggers a cascade of failures, causing repair costs to grow exponentially.

**3. Total Machine Shutdown: The Ultimate "Killer"**
* **Unplanned Downtime**: Sudden failure brings the entire worksite to a halt. Every day of delayed schedules and idle labor consumes your project profits.
* **Plummeting Resale Value**: A machine with aging, leaking oil seals everywhere suffers a significant devaluation in the second-hand market.

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#### **III. The Smart Choice: Making Oil Seals Your "Guardian of Profitability"**

**1. Choice is Everything: Quality is the Foundation**
Don't risk a major loss for minor savings. Opt for genuine OEM or high-quality brand oil seals. Their superior oil resistance, wear resistance, and elasticity provide longer-lasting, more reliable sealing protection.

**2. Prevention is Better than Cure: Inspection is Key**
Incorporate oil seal checks into your daily inspection routine. Watch for any **slight oil stains or seepage traces**. Nip problems in the bud, stopping failures before they start.

**3. Professionalism Ensures the Future: Installation is Decisive**
Oil seal installation requires professional skill and tools. Improper installation can instantly damage the sealing lip, rendering a premium seal useless. Trusting a professional technician is one of the best investments you can make for your equipment.

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FAQ

Q: What's the package?
A. We usually packed by standard exported box or carton. And we can pack as your requirement.

Q: When we ship out?
A: In 1-3 days if in stock.(depend on quantity)

Q: Which shipping term you can supply?
A:By sea, air or by express ( DHL, FedEx, TNT, UPS,EMS ...)

Q: How long does it take to my address?
A:The Normal delivery time is 3-7 days, depending on which country you are in.

Q:How can I trace my order?
A:We will send you the tracking number after we send the goods.

Q: What's brand you can offer?
A:OEM,original, aftermarket

Q. If I only know the model, but can not offer parts No., what should I do ?
A. If possible, you can send us pictures of old products, nameplate or the size for reference.