The Back-Up Ring,preformed Packing, cataloged under National Stock Number 5330-01-641-1056, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-641-1056 |
| Primary Part Number | AS5781R10-112 |
| Item Name | Back-Up Ring,preformed Packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Temp Rating | -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Material Document and Classification | AMS 3678/9 NATIONAL SPEC SINGLE MATERIAL RESPONSE |
| 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 |
| Part Number | Manufacturer |
|---|---|
| AS5781R10-112 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| SAE AS5781 | 3/1 Design control — primary reference Sae International Dba Sae International |
| AS5781R10-112 | 5/9 Secondary reference U.S. Government activity |
NSN 5330-01-641-1056 is a Back-Up Ring,preformed Packing, manufactured by Sae International Dba Sae International, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-641-1056 has 1 manufacturer part number on file: AS5781R10-112 (Sae International Dba Sae International).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-641-6709. Verify interchangeability with system specifications before substitution.
Key specifications for AS5781R10-112: Temp Rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF; Material Document and Classification: AMS 3678/9 NATIONAL SPEC SINGLE MATERIAL RESPONSE; Part Name Assigned by Controlling Agency: BACKUP RING; End Item Identification: F-16 ACFT. 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.