The Ring,seal, cataloged under National Stock Number 2520-00-932-0859, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-00-932-0859 |
| Primary Part Number | 659297 |
| Item Name | Ring,seal |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| General Characteristics Item Description | MATERIAL SYNTHETIC RUBBER,LAP JOINT,1/8 IN. THK,1-51/64 IN. OD,1-21/32 IN. ID IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 659297 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| D47445 | Cnh Industrial America Llc Dba Cnh America (USA) |
| 6773483 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| Reference | Meaning |
|---|---|
| 6773483 | 5/9 Secondary reference General Motors Corp |
| 659297 | 5/9 Secondary reference Towmotor Corp Dallas Plant Sub of Caterpillar Tractor Co |
NSN 2520-00-932-0859 is a Ring,seal, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-00-932-0859 has 3 manufacturer part numbers on file: 659297 (Caterpillar Inc Div Caterpillar Defense), D47445 (Cnh Industrial America Llc Dba Cnh America), 6773483 (Allison Transmission Inc Dba Allison Transmission, Inc).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-434-1904. Verify interchangeability with system specifications before substitution.
Key specifications for 659297: General Characteristics Item Description: MATERIAL SYNTHETIC RUBBER,LAP JOINT,1/8 IN. THK,1-51/64 IN. OD,1-21/32 IN. ID IN. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.