The Packing Assembly, cataloged under National Stock Number 5330-01-479-1533, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Greene Tweed & Co Inc. Government technical data includes 13 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-479-1533 |
| Primary Part Number | 7121MR-731-P4 |
| Item Name | Packing Assembly |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Greene Tweed & Co Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.027 INCHES NOMINAL IN |
| Outside Diameter | 1.256 INCHES NOMINAL IN |
| Material Document and Classification | GTS-0004 MFR REF SINGLE MATERIAL RESPONSE BOTTOM RING |
| Material Document and Classification | GTS-0004 MFR REF SINGLE MATERIAL RESPONSE TOP RING |
| Material Document and Classification | MIL-R-83248;75 DURO SHORE A MIL SPEC SINGLE MATERIAL RESPONSE INNER RING |
| Cross-Sectional Shape Style | SQUARE/RECTANGULAR TOP RING |
| Peripheral Diameter | 1.241 INCHES NOMINAL IN |
| Inside Diameter | 1.050 INCHES NOMINAL IN |
| Height | 0.133 INCHES NOMINAL IN |
| Center Hole Diameter | 1.187 INCHES NOMINAL IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE AND GRAPHITE TOP RING |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE AND GRAPHITE BOTTOM RING |
| Material | RUBBER FLUOROCARBON CLASS FPM INNER RING |
| 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 |
|---|---|
| 7121MR-731-P4 PRIMARY | Greene Tweed & Co Inc (USA) |
| Reference | Meaning |
|---|---|
| LA31-41125 ITEM 12 | 5/9 Secondary reference Moog Inc. Dba Ampac-Isp Corp |
| 7121MR-731-P4 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 36986-121 | 5/9 Secondary reference Moog Inc. Dba Ampac-Isp Corp |
NSN 5330-01-479-1533 is a Packing Assembly, manufactured by Greene Tweed & Co Inc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-479-1533 has 1 manufacturer part number on file: 7121MR-731-P4 (Greene Tweed & Co Inc).
Key specifications for 7121MR-731-P4: Cross-Sectional Height: 0.027 INCHES NOMINAL IN; Outside Diameter: 1.256 INCHES NOMINAL IN; Material Document and Classification: GTS-0004 MFR REF SINGLE MATERIAL RESPONSE BOTTOM RING; Material Document and Classification: GTS-0004 MFR REF SINGLE MATERIAL RESPONSE TOP RING. 13 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.