The Seal,plain, cataloged under National Stock Number 5330-01-271-0274, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 5 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-271-0274 |
| Primary Part Number | 132-0520 |
| Item Name | Seal,plain |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Seal Width | 1.524 INCHES MINIMUM AND 1.554 INCHES MAXIMUM IN |
| Housing Bore Diameter | 7.250 INCHES MINIMUM AND 7.253 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | DUAL LIP |
| Accommodated Shaft Diameter | 5.500 INCHES NOMINAL IN |
| Construction | ONE-PIECE |
| 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 |
|---|---|
| 132-0520 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 132-0520 | Caterpillar Inc Caterpillar Precision Seals (USA) |
| 12359522 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 132-0520F-02 | 5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense |
| B60-80 6840 | 5/9 Secondary reference Cr Industries Chicago Rawhide Mfg Co |
NSN 5330-01-271-0274 is a Seal,plain, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-271-0274 has 3 manufacturer part numbers on file: 132-0520 (Caterpillar Inc Div Caterpillar Defense), 132-0520 (Caterpillar Inc Caterpillar Precision Seals), 12359522 (U S Army Tank Automotive Command Amsta-Im-Mm).
2 possible matches (shared part number, not a government interchangeability claim): 5330-01-640-6164, 4320-01-673-4200. Verify interchangeability with system specifications before substitution.
Key specifications for 132-0520: Seal Width: 1.524 INCHES MINIMUM AND 1.554 INCHES MAXIMUM IN; Housing Bore Diameter: 7.250 INCHES MINIMUM AND 7.253 INCHES MAXIMUM IN; Cross-Sectional Shape Style: DUAL LIP; Accommodated Shaft Diameter: 5.500 INCHES NOMINAL IN. 5 specifications are 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.