The Seal Assembly,plain, cataloged under National Stock Number 5330-00-987-7807, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is John Crane, Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Seal Assembly,plain |
| FSC / FSG | 5330 — Packing and Gasket Materials (FSG 53) |
| Manufacturers | Circor Naval Solutions Llc Dba Warren Pumps (CAGE 63857); John Crane, Inc (CAGE 71724) |
| Parameter | Value |
|---|---|
| NSN | 5330-00-987-7807 |
| Primary Part Number | B26960 |
| Item Name | Seal Assembly,plain |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | John Crane, Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Part Number | Manufacturer |
|---|---|
| BM19 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| B26960 PRIMARY | John Crane, Inc (USA) |
| Reference | Meaning |
|---|---|
| FSP8911XF502O151(316) | 5/9 Secondary reference John Crane, Inc |
| FSP8911 | 5/9 Secondary reference John Crane, Inc |
| FSP8911XP2D1 | 5/9 Secondary reference John Crane, Inc |
| FSP8911XF502O151(316) | 3/9 Design control — primary reference Wartsila Lips Inc |
| FSP8911XF502O151(316) | C/1 Advisory reference — outside the item-of-supply concept Defense Maritime Solutions, Inc. |
NSN 5330-00-987-7807 is a Seal Assembly,plain, manufactured by John Crane, Inc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-987-7807 has 2 manufacturer part numbers on file: BM19 (Circor Naval Solutions Llc Dba Warren Pumps), B26960 (John Crane, Inc).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-293-6946. Verify interchangeability with system specifications before substitution.
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.