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225-3289 2253289 URE Double Lip Dust Wiper Seal for CAT Excavator Hydraulic Cylinder 988G 988H

Name: 225-3289 2253289 URE Double Lip Dust Wiper Seal for CAT Excavator Hydraulic Cylinder 988G 988H
Brand: Guangzhou Opal Machinery Parts Operation Department
SKU: 793D
Price: 1.50 USD
Availability: InStock

Product Details

Place of Origin: China

Brand Name: OUB

Certification: 225-3289

Model Number: 793D

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

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Product Details

Product Description

Product Details

Highlight:

Part No.::	225-3289	Part Name::	SEAL
Model:	740 730	Machine:	Mining Excavator
Material:	Carbon Steel	Color:	YELLOW
Install Parts:	TRANSMISSION CONTROL VALVE

Part No.::	225-3289
Part Name::	SEAL
Model:	740 730
Machine:	Mining Excavator
Material:	Carbon Steel
Color:	YELLOW
Install Parts:	TRANSMISSION CONTROL VALVE

Product Description

1. Quick Details of seal 225-3289:

Part NO.	225-3289
Machine	Mining excavator
Size	OEM
Material	Carbon Steel
Type	SEAL

2. 225-3289 picture:

225-3289 2253289 URE Double Lip Dust Wiper Seal for CAT Excavator Hydraulic Cylinder 988G 988H 0
3. Service part number :

PART NO.	PART NO.	Part NO.
5M2667	7M8485	2J1411
7S3206	2S4078	5J8300
1K6981	6K6307	6J6919
5J8200	304606	5J8150
8C9124	4J5140	5J8175
4J3236	4J5267	5J8200
5J7013	4J0519	5J0964
4J9224	4J0520	5J8275
7S3206	2S4078	5J8300
1K6981	6K6307	6J6919
5J8200	304606	5J8150
8C9124	4J5140	5J8175
215-4639	6V5586	8T0568

4. FAQ

Q: What’s the main function of 225-3289 and where is it installed on the excavator?
A: This is a double-lip dust wiper seal designed for hydraulic cylinders (boom, arm, bucket) of CAT excavators. Its core job is to scrape off mud, dust, sand and debris from the piston rod as it retracts, preventing contaminants from entering the cylinder and damaging the inner seals, bearings and hydraulic oil. The outer lip wipes heavy dirt; the inner lip retains lubricant and stops oil leakage.

Q: Why choose URE material instead of standard NBR rubber for this seal?
A: URE (Polyurethane) has 3–5 times higher wear resistance than NBR, excellent resistance to abrasion from rock dust and gravel, and better resistance to high pressure (up to 350 bar) and temperature (-30°C to +120°C). It also resists oil swelling and aging better, maintaining stable hardness and elasticity even after millions of reciprocating cycles in harsh construction environments.

Q: What color is this seal, and are there different design options for special working conditions?
A: The standard color is black (URE), with a metallic silver carbon steel outer case. We also offer blue (high-temperature URE) for desert or summer high-heat areas, green (chemical-resistant URE) for waste or chemical plants, and reinforced steel case versions for heavy-duty mining applications. The double-lip design is standard; single-lip versions are available for light-duty use.

Q: What’s the difference between this double-lip seal and a single-lip wiper seal?
A: A single-lip seal only cleans the rod but cannot prevent minor oil weeping. This double-lip design has two functional lips: the outer lip aggressively wipes heavy contaminants, while the inner lip acts as a secondary barrier to retain lubrication and stop oil leakage (eliminating "weeping"). It also has a metal-encased (canned) structure for stronger installation stability, preventing dislodgment under vibration.

Q: What’s the service life and quality standard of this product?
A: It meets CAT OEM quality standards with 100% dimensional inspection and leakage testing. The service life is 8,000–12,000 hours under normal construction conditions, and 5,000–7,000 hours in severe mud/water mining environments. The warranty is 12 months or 2,000 working hours (whichever comes first).

5. Exhibition and Wearhous

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Contacts: Mr. Vivian

Tel: 86-135-33728134

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