The Back-Up Ring,preformed Packing, cataloged under National Stock Number 5330-01-567-8261, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-567-8261 |
| Item Name | Back-Up Ring,preformed Packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Status | ACTIVE |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| M4110-2713 PC NO. 12 | C/1 Advisory reference — outside the item-of-supply concept Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc |
| M1420-236-EL | 3/9 Design control — primary reference Derbyshire Machine & Tool Co |
| M1420-236-EL | C/1 Advisory reference — outside the item-of-supply concept Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc |
| M4110-2713 PC NO. 12 | 5/9 Secondary reference Derbyshire Machine & Tool Co |
NSN 5330-01-567-8261 is a Back-Up Ring,preformed Packing, classified under FSC 5330, Packing and Gasket Materials. Status: active.
Key specifications for 5330-01-567-8261: Part Name Assigned by Controlling Agency: BACK-UP RING; End Item Identification: VALVE, GLOBE, NEEDLE M4110-2713; Material: PLASTIC POLYTETRAFLUOROETHYLENE. 1 specification is 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.