The Seal Ring,metal, cataloged under National Stock Number 5330-01-139-6837, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Kaydon Ring & Seal Inc Dba Skf Precision Technologies. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-139-6837 |
| Primary Part Number | A3501 |
| Item Name | Seal Ring,metal |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Kaydon Ring & Seal Inc Dba Skf Precision Technologies |
| Status | ACTIVE |
| Material Document and Classification | 3039T48 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Outside Diameter | 2.750 INCHES NOMINAL IN |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.0900 INCHES MINIMUM AND 0.0950 INCHES MAXIMUM IN |
| Ring Style | EXPANDING CONCENTRIC |
| 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 |
|---|---|
| A3501 PRIMARY | Kaydon Ring & Seal Inc Dba Skf Precision Technologies (USA) |
| Reference | Meaning |
|---|---|
| PR441980 | 5/2 Secondary reference U.S. Government activity |
| 10116753 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 3039T48P01 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5330-01-139-6837 is a Seal Ring,metal, manufactured by Kaydon Ring & Seal Inc Dba Skf Precision Technologies, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-139-6837 has 1 manufacturer part number on file: A3501 (Kaydon Ring & Seal Inc Dba Skf Precision Technologies).
Key specifications for A3501: Overall Width: 0.1800 INCHES MINIMUM AND 0.1810 INCHES MAXIMUM IN; Material Document and Classification: 3039T48 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Outside Diameter: 2.750 INCHES NOMINAL IN. 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 5330-01-139-6837 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.