The Gasket, cataloged under National Stock Number 5330-00-641-8174, 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 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5330-00-641-8174 |
| Primary Part Number | 181563 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| FSC Application Data | ENGINE,AIRCRAFT,JET |
| Cross-Sectional Thickness | 0.117 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN |
| Style Designator | CIRCULAR |
| Material Document and Classification | AMS 5570 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | HOLLOW |
| Outside Diameter | 20.875 INCHES MINIMUM AND 20.880 INCHES MAXIMUM IN |
| Aperture Diameter | 20.621 INCHES MINIMUM AND 20.644 INCHES MAXIMUM IN |
| Material | STEEL COMP 321 OVERALL |
| 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 |
|---|---|
| 181563 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 20875-7-3 | 5/9 Secondary reference Parker-Hannifin Corporation Dba Parker Hannifin Advanced Products Co Div Composite Sealing Systems Division |
| EON-020875-07-03-1 | 5/9 Secondary reference Parker-Hannifin Corporation Dba Parker Hannifin Advanced Products Co Div Composite Sealing Systems Division |
NSN 5330-00-641-8174 is a Gasket, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-641-8174 has 1 manufacturer part number on file: 181563 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-391-7349. Verify interchangeability with system specifications before substitution.
Key specifications for 181563: FSC Application Data: ENGINE,AIRCRAFT,JET; Cross-Sectional Thickness: 0.117 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN; Style Designator: CIRCULAR; Material Document and Classification: AMS 5570 ASSN STD 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.