The Seal,plain Encased, cataloged under National Stock Number 5330-00-068-0231, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is David Brown Hydraulics Inc Dba Hydreco. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5330-00-068-0231 |
| Primary Part Number | A907X21 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | David Brown Hydraulics Inc Dba Hydreco |
| Status | ACTIVE |
| Seal Width | 0.312 INCHES NOMINAL IN |
| Sealing Element Style | VERTICAL-ANGULAR |
| Housing Bore Diameter | 1.318 INCHES NOMINAL IN |
| Accommodated Shaft Maximum Rated Speed | 3600 FEET PER MINUTE FT |
| Case Style | SQUARE |
| Accommodated Shaft Diameter | 0.750 INCHES NOMINAL IN |
| Material | WOOL 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 |
|---|---|
| A907X21 PRIMARY | David Brown Hydraulics Inc Dba Hydreco (USA) |
| Reference | Meaning |
|---|---|
| A907-21 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| A907X21 | 5/9 Secondary reference General Signal Corp |
| 21922P11 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5330-00-068-0231 is a Seal,plain Encased, manufactured by David Brown Hydraulics Inc Dba Hydreco, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-068-0231 has 1 manufacturer part number on file: A907X21 (David Brown Hydraulics Inc Dba Hydreco).
1 possible match (shared part number, not a government interchangeability claim): 6220-00-945-2721. Verify interchangeability with system specifications before substitution.
Key specifications for A907X21: Seal Width: 0.312 INCHES NOMINAL IN; Sealing Element Style: VERTICAL-ANGULAR; Housing Bore Diameter: 1.318 INCHES NOMINAL IN; Accommodated Shaft Maximum Rated Speed: 3600 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.