The Seal,plain Encased, cataloged under National Stock Number 5330-00-979-5642, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. Government technical data includes 6 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5330-00-979-5642 |
| Primary Part Number | 2-300-125-01 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Seal Width | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Housing Bore Diameter | 2.824 INCHES MINIMUM AND 2.825 INCHES MAXIMUM IN |
| Accommodated Shaft Maximum Rated Speed | 15600 FEET PER MINUTE FT |
| Case Style | SQUARE |
| Accommodated Shaft Diameter | 2.500 INCHES NOMINAL IN |
| Material | STEEL CASE |
| 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 |
|---|---|
| 2-300-125-01 | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| B102872 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| B102872 | 5/9 Secondary reference Clevite an Imperial Clevite Co Seal Div |
| 2-300-125-02 | 5/1 Secondary reference U.S. Government activity |
| 2-300-125-01 | 5/2 Secondary reference U.S. Government activity |
| B30-802374 | 3/2 Design control — primary reference U.S. Government activity |
| 2-300-125 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5330-00-979-5642 is a Seal,plain Encased, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-979-5642 has 1 manufacturer part number on file: 2-300-125-01 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
1 possible match (shared part number, not a government interchangeability claim): 5910-01-567-8611. Verify interchangeability with system specifications before substitution.
Key specifications for 2-300-125-01: Seal Width: 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN; Housing Bore Diameter: 2.824 INCHES MINIMUM AND 2.825 INCHES MAXIMUM IN; Accommodated Shaft Maximum Rated Speed: 15600 FEET PER MINUTE FT; Case Style: SQUARE. 6 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.