The Seal Ring,metal, cataloged under National Stock Number 5330-00-798-2704, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5330-00-798-2704 |
| Primary Part Number | 515665 |
| Item Name | Seal Ring,metal |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Special Test Features | MATERIAL: AMS 4125 ALUMINUM ALLOY; MARK IDENTIFICATION PER SPECIFICATION PWA 310 CLASS 26; PROTECTIVE TREAT PER SPECIFICATION PWA 830 EXT CODE 1; THREADS PER SPECIFICATION PWA 3355; BREAK SHARP EDGES: .003-.015"; CORNERS MUST HAVE FILLETS .005-020" RADIUS; ALL DIAMETERS MUST BE CONCENTRIC WITHIN .010" FIR; DRAWING INTERPRETATIONS PER SPECIFICATION PWA 360 |
| Supplementary Features | AVERAGE DIAMETER IN FREE STATE MAY BE OUT-OF-ROUND .040 IN EXCESS OF TOL SHOWN ON DRAWING; MAY BE BUTT WELDED PER AMS 7488; BOTTOM CHAMFER .010-.030" X 45 DEGREES + OR - 2 DEGREES IN |
| Criticality Code Justification | FEAT |
| Outside Diameter | 17.640 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 515665 | Union Machine Co of Lynn, Inc (USA) |
| 515665 | Adom Engineering, Inc. Dba Adom Engineering Inc (USA) |
| 515665 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 515665 | Parts Life Inc (USA) |
| 515665 | Rtx Corporation Div Pratt & Whitney (USA) |
| Reference | Meaning |
|---|---|
| 515665 | 5/9 Secondary reference Maven Engineering Corporation |
| 515665 | 5/9 Secondary reference Lpi Industries Corporation |
| 393521 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 515665 | 5/9 Secondary reference Westinghouse Electric Corp |
| 515665 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 515665 | 5/9 Secondary reference Butkin Precision Mfg Corp |
| 515665 | 5/9 Secondary reference South East Wheel and Rim Co |
NSN 5330-00-798-2704 is a Seal Ring,metal, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-798-2704 has 5 manufacturer part numbers on file: 515665 (Union Machine Co of Lynn, Inc), 515665 (Adom Engineering, Inc. Dba Adom Engineering Inc), 515665 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 515665 (Parts Life Inc), 515665 (Rtx Corporation Div Pratt & Whitney).
3 possible matches (shared part number, not a government interchangeability claim): 3110-01-017-8750, 6680-01-369-9905, 4730-01-656-4156. Verify interchangeability with system specifications before substitution.
Key specifications for 515665: Special Test Features: MATERIAL: AMS 4125 ALUMINUM ALLOY; MARK IDENTIFICATION PER SPECIFICATION PWA 310 CLASS 26; PROTECTIVE TREAT PER SPECIFICATION PWA 830 EXT CODE 1; THREADS PER SPECIFICATION PWA 3355; BREAK SHARP EDGES: .003-.015"; CORNERS MUST HAVE FILLETS .005-020" RADIUS; ALL DIAMETERS MUST BE CONCENTRIC WITHIN .010" FIR; DRAWING INTERPRETATIONS PER SPECIFICATION PWA 360; Supplementary Features: AVERAGE DIAMETER IN FREE STATE MAY BE OUT-OF-ROUND .040 IN EXCESS OF TOL SHOWN ON DRAWING; MAY BE BUTT WELDED PER AMS 7488; BOTTOM CHAMFER .010-.030" X 45 DEGREES + OR - 2 DEGREES IN; Criticality Code Justification: FEAT; Outside Diameter: 17.640 INCHES NOMINAL IN. 5 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.
NSN 5330-00-798-2704 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.