The Packing,preformed, cataloged under National Stock Number 5330-01-556-2646, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Specialty Seals & Accessories, Inc.. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-556-2646 |
| Primary Part Number | PK-10227503500005 |
| Item Name | Packing,preformed |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Specialty Seals & Accessories, Inc. |
| Status | ACTIVE |
| Cross-Sectional Height | 0.375 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | SQUARE/RECTANGULAR |
| Peripheral Diameter | 3.500 INCHES NOMINAL IN |
| Center Hole Diameter | 2.750 INCHES NOMINAL IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE AND GRAPHITE AND FIBER NONASBESTOS OVERALL |
| 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 |
|---|---|
| NSD-4127 | Specialty Seals & Accessories, Inc. (USA) |
| PK-10227503500005 PRIMARY | Specialty Seals & Accessories, Inc. (USA) |
NSN 5330-01-556-2646 is a Packing,preformed, manufactured by Specialty Seals & Accessories, Inc., classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-556-2646 has 2 manufacturer part numbers on file: NSD-4127 (Specialty Seals & Accessories, Inc.), PK-10227503500005 (Specialty Seals & Accessories, Inc.).
Key specifications for PK-10227503500005: Cross-Sectional Height: 0.375 INCHES NOMINAL IN; Cross-Sectional Shape Style: SQUARE/RECTANGULAR; Peripheral Diameter: 3.500 INCHES NOMINAL IN; Special Features: STYLE OF PACKING IS ANTIKEYSTONE 2 (STAYS SQUARE, DOES NOT BULGE UP); 5 RINGS ARE REQUIRED TO PREVENT FAILURE OF EFFECTIVE SEALING. 5 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.