20Y-53-11551 20Y5311551 Seal Excavator Spare Parts For KOMATSU HB205 HB215 PC130 PC160

• 20Y-53-11551 20Y5311551 Seal Excavator Spare Parts For KOMATSU HB205 HB215 PC130 PC160

• Specification

• Function 

1.Prevent Internal Lubricant Leakage
How it works: The O-rings press the two cast iron seal rings tightly together, creating a continuous, leak-proof interface between the stationary and rotating parts of components (e.g., the final drive housing and its rotating shaft). This interface blocks the escape of lubricating oil or grease that is critical for reducing friction between gears, bearings, and other moving parts inside.
Why it matters: Without this seal, lubricants would leak out, leading to insufficient lubrication, increased metal-to-metal friction, accelerated wear of gears/bearings, and eventual component seizure—all of which cause costly downtime and repairs.

2. Block External Contaminant Invasion
How it works: The rigid, wear-resistant cast iron rings form a physical barrier against external debris (sand, gravel, mud), water, and dust. Even in harsh job sites (e.g., construction sites, mines, or wet terrain), the tight seal prevents these contaminants from entering the internal lubrication system.
Why it matters: Contaminants like sand or mud are abrasive; if they mix with lubricants, they turn the oil into a "grinding paste" that scratches gears, damages bearings, and degrades the lubricant’s performance. This leads to premature component failure and frequent maintenance.

• Compatible models

• More seal parts fit for KOMATSU machinery

• Catalog parts list

• We could supply the following spare parts

1 Hydraulic parts: hydraulic pump, main valve, hydraulic cylinder, final drive, travel motor, swing machinery, swing motor etc.

2 Engine parts: engine ass’y, piston, piston ring, cylinder block, cylinder head, crankshaft, turbocharger, fuel injection pump, starting motor and alternator etc.

3 Undercarriage part: Track roller, Carrier roller, Track Link, Track shoe, Sprocket, Idler and Idler cushion etc.

4 Cab parts: operator’s cab, wiring harness, monitor, controller, seat, door etc.

5 Cooling parts: Radiator, air conditioner, compressor, after cooler etc.

6 Other parts: Service kit, swing circle, engine hood, swing joint, fuel tank, filter, boom, arm, bucket etc.

• Advantage

1. Offer Top quality & competitive products

2. Support 12-month warranty

3. 100% tested before shipping

4. Delivery in time

5. A wide range of Oil Pressure Sensor, Fuel Tank Level Sensor, Temperature Sensor, Speed Sensor for excavator 

6. More than 15 years production and 11 years foreign trade experience

7. Professional QC team

8. Best sales team, 24 hours service

• Packing and Shipping

Packing Details :

inner packing : plastic film for wrapping

external packing : wooden

Shipping :

within 3 days after received the payment , by air or by express or by sea on the basis of the

quantity and emergency circumstances.

1. By Couriers: DHL, UPS, FEDEX, TNT are the main courier companies we are cooperated,

2. By Air: Delivery from the Guangzhou air port to customer's destination city air port.

3. By Sea: Delivery from the Huangpu port .

• Product Warranty

1. Warranty Period: 3 Months' warranty from the date of arrival. Longer period of 6 months' warranty could be offered with higher price level.

2. Warranty type: replacement of the parts that have quality problem.

3. Warranty is not valid for below s

* Cutomer give wrong information about the order

* Force Majeure

* Wrong installation and operation

* Rust because of wrong stock & maintenance