The Seal Ring,metal, cataloged under National Stock Number 5330-01-144-3256, 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 6 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-144-3256 |
| Primary Part Number | 4001642P05 |
| Item Name | Seal Ring,metal |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Cross-Sectional Shape Style | DOUBLE INSIDE COUNTERBORE, STRAIGHT FACE |
| Outside Diameter | 7.140 INCHES NOMINAL IN |
| Joint Style | STEP JOINT |
| Radial Wall Thickness | 0.1450 INCHES MINIMUM AND 0.1550 INCHES MAXIMUM IN |
| Ring Style | EXPANDING CONCENTRIC |
| Material | IRON 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 | X |
| Part Number | Manufacturer |
|---|---|
| 4001642P05 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 78238-01 | Kaydon Ring & Seal Inc Dba Skf Precision Technologies (USA) |
| 4001642P05 | Rtx Corporation Div Pratt & Whitney (USA) |
| Reference | Meaning |
|---|---|
| 4001642P05 | 5/9 Secondary reference Kaydon Ring & Seal Inc Dba Skf Precision Technologies |
NSN 5330-01-144-3256 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 5330-01-144-3256 has 3 manufacturer part numbers on file: 4001642P05 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 78238-01 (Kaydon Ring & Seal Inc Dba Skf Precision Technologies), 4001642P05 (Rtx Corporation Div Pratt & Whitney).
Key specifications for 4001642P05: Overall Width: 0.1575 INCHES MINIMUM AND 0.1590 INCHES MAXIMUM IN; Cross-Sectional Shape Style: DOUBLE INSIDE COUNTERBORE, STRAIGHT FACE; Outside Diameter: 7.140 INCHES NOMINAL IN; Joint Style: STEP JOINT. 6 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 5330-01-144-3256 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.