The Felt,mechanical,preformed, cataloged under National Stock Number 5330-00-079-1225, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-00-079-1225 |
| Item Name | Felt,mechanical,preformed |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Status | ACTIVE |
| Cross-Sectional Height | 0.250 INCHES NOMINAL IN |
| Cross-Sectional Width | 0.375 INCHES NOMINAL IN |
| Style Designator | CIRCULAR |
| Material Document and Classification | C-F-206 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | SQUARE |
| Outside Diameter | 5.375 INCHES NOMINAL IN |
| Aperture Diameter | 4.625 INCHES NOMINAL IN |
| Material | WOOL COMP 16R1 OVERALL |
| 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 |
|---|---|
| 277-137 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5330-00-079-1225 is a Felt,mechanical,preformed, classified under FSC 5330, Packing and Gasket Materials. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5905-00-138-1285, 5855-01-581-2143. Verify interchangeability with system specifications before substitution.
Key specifications for 5330-00-079-1225: Cross-Sectional Height: 0.250 INCHES NOMINAL IN; Cross-Sectional Width: 0.375 INCHES NOMINAL IN; Style Designator: CIRCULAR; Material Document and Classification: C-F-206 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 8 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.