The Seal,face, cataloged under National Stock Number 5330-01-056-4200, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Proponent, Inc. Dba Proponent. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5330-01-056-4200 |
| Primary Part Number | 581993-1 |
| Item Name | Seal,face |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Proponent, Inc. Dba Proponent |
| Status | ACTIVE |
| General Characteristics Item Description | OD 1.438 IN. MIN,1.440 IN. MAX,ACCOMMODATED SHAFT DIA 0.895 IN. MIN,0.432 IN. MAX THK 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 |
|---|---|
| 581993-1 | Proponent, Inc. Dba Proponent (USA) |
| 98-087-933-001 | Eaton Corporation Dba Eaton Inoac Div Eaton (USA) |
| 581993-1 | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| 58735 | Eaton Corporation Dba Eaton Inoac Div Eaton (USA) |
| 581993-1 | Technetics Group Chicago Llc (USA) |
| Reference | Meaning |
|---|---|
| 1-979-200 | 3/2 Design control — primary reference U.S. Government activity |
| 63-087-12 | 5/9 Secondary reference Apache Corp Gits Bros Mfg Co |
NSN 5330-01-056-4200 is a Seal,face, manufactured by Proponent, Inc. Dba Proponent, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-056-4200 has 5 manufacturer part numbers on file: 581993-1 (Proponent, Inc. Dba Proponent), 98-087-933-001 (Eaton Corporation Dba Eaton Inoac Div Eaton), 581993-1 (Honeywell International Inc. Div Aerospace - Torrance), 58735 (Eaton Corporation Dba Eaton Inoac Div Eaton), 581993-1 (Technetics Group Chicago Llc).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-327-7995. Verify interchangeability with system specifications before substitution.
Key specifications for 581993-1: General Characteristics Item Description: OD 1.438 IN. MIN,1.440 IN. MAX,ACCOMMODATED SHAFT DIA 0.895 IN. MIN,0.432 IN. MAX THK 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.