The Seal Ring,metal, cataloged under National Stock Number 5330-00-352-1836, 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 9 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-00-352-1836 |
| Primary Part Number | 4020638 |
| Item Name | Seal Ring,metal |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| FSC Application Data | ENGINE,ACFT,TURBOFAN |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | STEP JOINT |
| Inside Diameter | 3.500 INCHES NOMINAL IN |
| Radial Wall Thickness | 0.0850 INCHES MINIMUM AND 0.0950 INCHES MAXIMUM IN |
| Ring Style | CONTRACTING CONCENTRIC |
| Surface Treatment | CHROMIUM OUTSIDE PERIPHERY |
| Material | STEEL OVERALL |
| Metallic Hardness Rating | 32.0 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 |
|---|---|
| 4020638 | Norton Canada Inc (CAN) |
| 4020638 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 83565-00 | Kaydon Ring & Seal Inc Dba Skf Precision Technologies (USA) |
| 4020638 | Kaydon Ring & Seal Inc Dba Skf Precision Technologies (USA) |
| Reference | Meaning |
|---|---|
| 4020638 | 5/9 Secondary reference American Tubular Elevator Co |
| 5330PL0796324 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 4020638 | 5/9 Secondary reference Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent |
| 4020638 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 5330-00-352-1836 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 5330-00-352-1836 has 4 manufacturer part numbers on file: 4020638 (Norton Canada Inc), 4020638 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 83565-00 (Kaydon Ring & Seal Inc Dba Skf Precision Technologies), 4020638 (Kaydon Ring & Seal Inc Dba Skf Precision Technologies).
Key specifications for 4020638: FSC Application Data: ENGINE,ACFT,TURBOFAN; Overall Width: 0.1540 INCHES MINIMUM AND 0.1550 INCHES MAXIMUM IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: STEP JOINT. 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.