The Seal,plain Encased, cataloged under National Stock Number 5330-00-994-5791, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5330-00-994-5791 |
| Primary Part Number | 716137 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
| Status | ACTIVE |
| Temp Rating | 250.0 FAHRENHEIT DEGF |
| Seal Width | 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN |
| Sealing Element Style | ANGULAR-OPPOSED |
| Housing Bore Diameter | 0.098 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Case Style | SQUARE |
| Accommodated Shaft Diameter | 0.500 INCHES NOMINAL IN |
| Material | STEEL CASE |
| Material | RUBBER SYNTHETIC SEALING ELEMENT A |
| Material | RUBBER SYNTHETIC SEALING ELEMENT B |
| 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 |
|---|---|
| 8355855 TYPE III | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 716137 PRIMARY | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA) |
| Reference | Meaning |
|---|---|
| 5330009945791 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 8355855 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| 66051 | 5/9 Secondary reference Dana Automotive Systems Group, Llc Dba Dana Sealing Products |
| 8355855 TYPE III | 5/2 Secondary reference U.S. Government activity |
NSN 5330-00-994-5791 is a Seal,plain Encased, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-994-5791 has 2 manufacturer part numbers on file: 8355855 TYPE III (U S Army Tank Automotive Command Amsta-Im-Mm), 716137 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).
4 possible matches (shared part number, not a government interchangeability claim): 5310-01-109-3030, 1730-01-376-2660, 5985-01-468-0295. Verify interchangeability with system specifications before substitution.
Key specifications for 716137: Temp Rating: 250.0 FAHRENHEIT DEGF; Seal Width: 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN; Sealing Element Style: ANGULAR-OPPOSED; Housing Bore Diameter: 0.098 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN. 9 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.