The Ring,packing,preformed, cataloged under National Stock Number 5330-01-108-0781, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 3 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through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-108-0781 |
| Primary Part Number | 820-4445808-12 |
| Item Name | Ring,packing,preformed |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | POLYTETRAFLUOROETHYLENE ASBESTOS 3/4X1-1/8X3/16 |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 820-4445808-12 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 43420 | 5/1 Secondary reference John Crane, Inc |
| P-3/4X1-1/8X3/16 | 5/1 Secondary reference Crane Co Div Valve Div |
| 8910B2-726-14 | 5/1 Secondary reference U.S. Government activity |
| 820-2178500-37 | 5/1 Secondary reference Naval Sea Systems Command |
| 8910B-2-710PC20 | 5/9 Secondary reference Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse |
| 820-5348425-5 | 5/1 Secondary reference Naval Sea Systems Command |
| 8930B-2-746 PC19 | 5/9 Secondary reference Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse |
| 8930F-2-720PC23 | 5/9 Secondary reference Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse |
| P-3/4X1-1/8X3/16 | 3/1 Design control — primary reference John Crane, Inc |
| 62I000PT104 | 5/1 Secondary reference U.S. Government activity |
NSN 5330-01-108-0781 is a Ring,packing,preformed, manufactured by Naval Sea Systems Command, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-108-0781 has 1 manufacturer part number on file: 820-4445808-12 (Naval Sea Systems Command).
3 possible matches (shared part number, not a government interchangeability claim): 5330-01-291-5510, 5998-01-384-5690, 7025-01-548-0233. Verify interchangeability with system specifications before substitution.
Key specifications for 820-4445808-12: General Characteristics Item Description: POLYTETRAFLUOROETHYLENE ASBESTOS 3/4X1-1/8X3/16; Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS. 3 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.