The Seal,plain Encased, cataloged under National Stock Number 5330-01-551-8918, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Bird-Johnson Propeller Company, Llc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-551-8918 |
| Primary Part Number | MB202470 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Bird-Johnson Propeller Company, Llc |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING RETAINER |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR CORE |
| 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 |
|---|---|
| NB/0/221252 | Michell Bearings Limited (GBR) |
| WA/X/202470 | Michell Bearings Limited (GBR) |
| MB202470 PRIMARY | Bird-Johnson Propeller Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| WA/X/202470 | 3/9 Design control — primary reference Bird-Johnson Propeller Company, Llc |
| B202470 | 5/9 Secondary reference Bird-Johnson Propeller Company, Llc |
NSN 5330-01-551-8918 is a Seal,plain Encased, manufactured by Bird-Johnson Propeller Company, Llc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-551-8918 has 3 manufacturer part numbers on file: NB/0/221252 (Michell Bearings Limited), WA/X/202470 (Michell Bearings Limited), MB202470 (Bird-Johnson Propeller Company, Llc).
Key specifications for MB202470: Part Name Assigned by Controlling Agency: BONDED SEAL; End Item Identification: BEARING,GEAR COUPLING SHAFT; Material: STEEL CORROSION RESISTING RETAINER; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR CORE. 2 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.