| Parameter | Specification | Notes |
|---|---|---|
| COGENG Part Number | COGENG-246-5911-CAT | "CAT" denotes Caterpillar application |
| Replaces OEM Part No. | Catcorp 246/5911 | Direct replacement |
| Temperature Range | -40°C to +120°C | Suitable for extreme operating conditions |
| Pressure Rating | Up to 45 MPa (6500 PSI) | Meets Caterpillar system requirements |
| Rod Seal Material | Polyurethane with NBR backup | High-pressure resistance |
| Piston Seal Material | Glass-filled PTFE | Excellent wear characteristics |
| Wiper Material | Polyurethane | Double-lipped design |
| Guide Rings | PTFE-filled fabric | Low friction, high wear resistance |
| O-Ring Material | HNBR | Superior heat and oil resistance |
| Fluid Compatibility | Petroleum-based, biodegradable, and synthetic hydraulic oils | CAT HYDO, AW, and similar |
| Component | Dimension | Tolerance |
|---|---|---|
| Primary Rod Seal | 80 mm ID | ±0.15 mm |
| Secondary Rod Seal | 80 mm ID | ±0.15 mm |
| Piston Seal | 110 mm ID | ±0.20 mm |
| Wear Band | 110 mm OD | ±0.25 mm |
| Wiper Seal | 80.5 mm ID | ±0.10 mm |
| Guide Ring | 110 mm OD | ±0.20 mm |
Q: What equipment models use the 246/5911 equivalent hydraulic cylinder seal kit?
A: The 246/5911 (also referenced as 246-5911 or 2465911) is an equivalent heavy-duty hydraulic cylinder seal kit designed to fit various excavator and construction equipment cylinders where this part number is specified. Common applications include boom, arm, or bucket cylinders on select Caterpillar and other OEM equipment models. Always verify this part number against your cylinder's original seal kit reference or your machine's parts manual before ordering.
Q: What are the symptoms of failing heavy-duty hydraulic cylinder seals?
A: Common symptoms include visible hydraulic oil leaking from the cylinder rod or gland area, decreased lifting or digging force, cylinder drift where the implement slowly lowers under load, jerky or erratic cylinder movement, and external oil contamination around the cylinder. In heavy-duty applications, seal failure can lead to internal cylinder scoring and significantly more expensive repairs if not addressed promptly.
Q: What is included in the COGENG 246/5911 equivalent seal kit?
A: Each complete seal kit typically includes piston seals, rod seals, wiper seals, O-rings, backup rings, and gland seals required for a full cylinder overhaul. COGENG equivalent kits are manufactured using high-grade materials that meet or exceed OEM specifications for abrasion resistance, temperature tolerance, and extended service life in demanding heavy-duty applications.
Q: Is this seal kit suitable for professional hydraulic cylinder rebuilding?
A: Yes, the COGENG 246/5911 equivalent seal kit is manufactured using high-grade polyurethane, nitrile, and PTFE materials to precise OEM dimensional specifications. It is designed for professional cylinder rebuilding and provides dependable sealing performance when installed following standard hydraulic cylinder repair procedures by a qualified technician.
Q: What is the warranty coverage for this seal kit?
A: COGENG provides a standard 12-month warranty against manufacturing defects from the date of installation. Proof of purchase and installation by a qualified technician are required. Warranty does not cover seal failure caused by contaminated hydraulic fluid, improper installation, cylinder barrel or rod surface damage, or use on incompatible equipment.
Q: What should I inspect before installing the new seal kit?
A: Before installation, carefully inspect the cylinder rod for scratches, pitting, or chrome plating damage, and check the cylinder barrel for scoring or internal wear. Damaged surfaces will cause premature seal failure. Recondition or replace worn components and thoroughly flush the hydraulic system to remove all contaminants before reassembly.
Q: How is the seal kit packaged for shipping?
A: Each COGENG 246/5911 equivalent seal kit is sealed in a heavy-duty, moisture-resistant poly bag with individual seal compartmentalization to prevent damage during transit. All components are labeled for easy identification during reassembly. The kit is then packed in a sturdy outer carton for added protection.
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