The Seal,plain Encased, cataloged under National Stock Number 5330-00-291-7952, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 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 | 5330-00-291-7952 |
| Primary Part Number | 500157 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Seal Width | 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN |
| Sealing Element Style | ANGULAR |
| Housing Bore Diameter | 3.4985 INCHES MINIMUM AND 3.5015 INCHES MAXIMUM IN |
| Accommodated Shaft Maximum Rated Speed | 1600 FEET PER MINUTE FT |
| Case Style | SQUARE |
| Accommodated Shaft Diameter | 2.500 INCHES NOMINAL IN |
| Material | LEATHER OR RUBBER SYNTHETIC SEALING ELEMENT B |
| Material | LEATHER OR RUBBER SYNTHETIC SEALING ELEMENT A |
| 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 |
|---|---|
| 500157 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5330-00-291-7952 is a Seal,plain Encased, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-291-7952 has 1 manufacturer part number on file: 500157 (U S Army Tank Automotive Command Amsta-Im-Mm).
3 possible matches (shared part number, not a government interchangeability claim): 5340-00-736-9390, 5998-01-209-5487, 3040-01-238-4276. Verify interchangeability with system specifications before substitution.
Key specifications for 500157: Seal Width: 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN; Sealing Element Style: ANGULAR; Housing Bore Diameter: 3.4985 INCHES MINIMUM AND 3.5015 INCHES MAXIMUM IN; Accommodated Shaft Maximum Rated Speed: 1600 FEET PER MINUTE FT. 8 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.