225-3289 2253289 URE Double Lip Dust Wiper Seal for CAT Excavator Hydraulic Cylinder 988G 988H
Price:
Negotiable
MOQ:
10
Delivery Time:
Within 5-15 days after getting your desposit
Brand:
OUB
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:
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.
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
Oil seals,Hydraulic Seals, Cylinders Seal Kits, And More
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Company
Guangzhou Opal Machinery Parts Operation Department
Location
NO.212,Zhu ji rode,tian he distric,guangzhou,China
Contact Person
Vivian