The Packing Assembly, cataloged under National Stock Number 5330-01-131-8178, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 16 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-131-8178 |
| Primary Part Number | ST7M254-009-2 |
| Item Name | Packing Assembly |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Temp Rating | -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Intermediate Ring Quantity | 1 |
| Outside Diameter | 0.329 INCHES NOMINAL IN |
| Material Document and Classification | MIL-P-25732 MIL SPEC SINGLE MATERIAL RESPONSE INTERMEDIATE RING |
| Material Document and Classification | MIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE BOTTOM RING |
| Material Document and Classification | MIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE TOP RING |
| Cross-Sectional Shape Style | SQUARE/RECTANGULAR BOTTOM RING |
| Cross-Sectional Shape Style | SQUARE/RECTANGULAR TOP RING |
| Cross-Sectional Shape Style | SPECIAL INTERMEDIATE RING |
| Inside Diameter | 0.212 INCHES NOMINAL IN |
| Height | 0.141 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR INTERMEDIATE RING |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE BOTTOM RING |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE TOP RING |
| Joint Type | SCARF-PERIPHERAL TOP RING |
| Joint Type | SCARF-PERIPHERAL BOTTOM 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 |
|---|---|
| 7009MS-160-T | Greene Tweed & Co Inc (USA) |
| ST7M254-009-2 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 7009MR-16Q-T | C/1 Advisory reference — outside the item-of-supply concept Greene Tweed & Co Inc |
| 10116705 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 3921672-009 | 5/9 Secondary reference U.S. Government activity |
| 7009MS-160-T | 5/9 Secondary reference Greene Tweed and Co Advantec Div |
| 7009MS160-T | 5/9 Secondary reference Palmetto Inc |
| S38421-BAK1 | 5/9 Secondary reference Rits Ltd. Brokers, Inc. |
| S38421-009BAK1 | 5/9 Secondary reference Trelleborg Sealing Solutions Us, Inc. |
NSN 5330-01-131-8178 is a Packing Assembly, manufactured by The Boeing Company Div Defense, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-131-8178 has 2 manufacturer part numbers on file: 7009MS-160-T (Greene Tweed & Co Inc), ST7M254-009-2 (The Boeing Company Div Defense).
Key specifications for ST7M254-009-2: Temp Rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF; Intermediate Ring Quantity: 1; Outside Diameter: 0.329 INCHES NOMINAL IN; Material Document and Classification: MIL-P-25732 MIL SPEC SINGLE MATERIAL RESPONSE INTERMEDIATE RING. 16 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.