The O-Ring, cataloged under National Stock Number 5331-01-438-4500, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Chromalox Inc Dba Chromalox Precision Heat and Control, Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (CAGE 65586) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-438-4500 |
| Primary Part Number | 132-116937-023 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 052-115907-003PT4 | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| 132-116937-023 PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
NSN 5331-01-438-4500 is a O-Ring, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-438-4500 has 2 manufacturer part numbers on file: 052-115907-003PT4 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), 132-116937-023 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
No hazard code in the DLA record (HMIC N). 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.