Introduction
The Ingersoll Rand 47642697001 39253992 O-Ring is a precision sealing component associated with gearbox and motor assembly maintenance on compatible rotary screw compressors. 47642697001 identifies a gearbox maintenance kit for older Cobra M90-160 applications, while 39253992 is separately identified as an O-ring used within the motor assembly of the R90-160 IU compressor family.
Although an O-ring is a relatively small component, its sealing performance can have a direct effect on the reliability of a larger mechanical assembly. The correct cross-section, material, groove fit, and installation condition are essential to maintaining a dependable seal under compressor operating conditions.
The R90-160 IU parts documentation places 39253992 within the motor assembly alongside the gearcase, gasket, shaft seal, seal housing, other O-rings, and rotating drive components. This makes the part relevant to detailed gearbox and motor-drive service rather than general-purpose sealing applications.
For maintenance teams, renewing the O-ring when the associated assembly is opened can be an effective way to restore the sealing interface. An old elastomer can lose its original resilience through compression, thermal exposure, contamination, or long-term service, increasing the possibility of leakage after reassembly.
The relationship between 47642697001 and 39253992 should be understood carefully. The first number identifies the gearbox maintenance kit, while 39253992 identifies a specific O-ring. Available parts references do not prove that this O-ring is supplied with every 47642697001 kit, so the applicable bill of materials should be checked before purchasing on that assumption.
39253992 is also listed by multiple compressor-parts sources specifically as an Ingersoll Rand O-ring, providing useful procurement traceability. For exact fitment, however, the compressor model, serial number, and assembly position remain the most reliable criteria.
For industrial maintenance and purchasing professionals, selecting the correct OEM sealing reference helps minimize rework and supports consistent compressor service quality. When combined with proper groove inspection, surface preparation, and installation practices, the correct O-ring contributes to dependable long-term sealing performance.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Ingersoll Rand |
| Maintenance Kit Number | 47642697001 |
| Maintenance Kit Type | Gearbox Maintenance Kit |
| Maintenance Kit Application | Older Cobra M90-160 compressor family |
| Component Number | 39253992 |
| Product Type | O-Ring |
| Assembly Reference | Motor Assembly |
| Associated Compressor Family | R90-160 IU reference |
| Primary Function | Static sealing |
| Sealing Application | Motor / gearcase assembly |
| Material | Application-specific; verify current parts documentation |
| Inside Diameter | Application-specific; verify applicable parts documentation |
| Cross-Section | Application-specific; verify applicable parts documentation |
| Outside Diameter | Application-specific; verify applicable parts documentation |
| Groove Dimensions | Application-specific |
| Temperature Rating | Application-specific |
| Pressure Rating | Application-specific |
| Fluid Compatibility | Application-specific |
| Dimensions | Application-specific; verify applicable parts documentation |
| Weight | Application-specific; verify applicable parts documentation |
| Installation | Follow applicable Ingersoll Rand service procedure |
| Compatibility | Verify compressor model, serial number, and motor assembly |
| Package Contents | Verify against the applicable gearbox maintenance-kit bill of materials |
Recommended Companion Models
| Model | Product Name |
| 39454558 | Motor-to-Gearcase Gasket |
| 89292445 | High-Pressure Shaft Seal |
| 95023388 | O-Ring |
| 89292478 | Motor Shaft Sleeve |
These references appear within or are closely associated with the R90-160 IU motor/gearcase assembly. The parts manual specifically lists 39454558, 89292445, 95023388, and 89292478 alongside the motor assembly components.
Frequently Selected Alternatives
| Model | Product Name |
| 95023388 | O-Ring |
| 95023107 | O-Ring |
| 39253984 | O-Ring |
| 39186002 | O-Ring |
