The Gasket, cataloged under National Stock Number 5330-01-722-4988, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is W & O Supply Inc. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Gasket |
| FSC / FSG | 5330 — Packing and Gasket Materials (FSG 53) |
| Manufacturers | W & O Supply Inc (CAGE 1QP40) |
| Parameter | Value |
|---|---|
| NSN | 5330-01-722-4988 |
| Primary Part Number | DDRUB500 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | W & O Supply Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| DDRUB500 PRIMARY | W & O Supply Inc (USA) |
| Reference | Meaning |
|---|---|
| DF420121 | D/9 Drawing number reference only W & O Supply Inc |
| NNDF420121#98-1 PC 11 | C/1 Advisory reference — outside the item-of-supply concept W & O Supply Inc |
NSN 5330-01-722-4988 is a Gasket, manufactured by W & O Supply Inc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-722-4988 has 1 manufacturer part number on file: DDRUB500 (W & O Supply Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4510-01-723-6137, 4820-01-723-6146. 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.