The Seal Ring,metal, cataloged under National Stock Number 5330-00-421-2189, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Norton Canada Inc. Government technical data includes 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5330-00-421-2189 |
| Primary Part Number | 693748 |
| Item Name | Seal Ring,metal |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Norton Canada Inc |
| Status | ACTIVE |
| FSC Application Data | ENGINE,AIRCRAFT |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Outside Diameter | 3.550 INCHES NOMINAL IN |
| Joint Style | INTERLOCKING JOINT |
| Radial Wall Thickness | 0.0700 INCHES MINIMUM AND 0.0750 INCHES MAXIMUM IN |
| Ring Style | EXPANDING CONCENTRIC |
| Surface Treatment | SILVER OVERALL |
| Material | STEEL OVERALL |
| Metallic Hardness Rating | 33.0 NOMINAL ROCKWELL C |
| 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 |
|---|---|
| 693748 | Norton Canada Inc (CAN) |
| Reference | Meaning |
|---|---|
| 693748 | 3/9 Design control — primary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 693748 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 693748 | 5/9 Secondary reference American Tubular Elevator Co |
NSN 5330-00-421-2189 is a Seal Ring,metal, manufactured by Norton Canada Inc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-421-2189 has 1 manufacturer part number on file: 693748 (Norton Canada Inc).
1 possible match (shared part number, not a government interchangeability claim): 5950-00-869-4532. Verify interchangeability with system specifications before substitution.
Key specifications for 693748: FSC Application Data: ENGINE,AIRCRAFT; Overall Width: 0.1540 INCHES MINIMUM AND 0.1550 INCHES MAXIMUM IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Outside Diameter: 3.550 INCHES NOMINAL IN. 9 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.