The O-Ring, cataloged under National Stock Number 5331-01-173-0880, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Thermal Engineering Co a Div of Sea Kay Co Inc. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Thermal Engineering Co a Div of Sea Kay Co Inc (CAGE 32207) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-173-0880 |
| Primary Part Number | OR25 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Thermal Engineering Co a Div of Sea Kay Co 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 |
|---|---|
| OR25 PRIMARY | Thermal Engineering Co a Div of Sea Kay Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 0R25 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-01-173-0880 is a O-Ring, manufactured by Thermal Engineering Co a Div of Sea Kay Co Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-173-0880 has 1 manufacturer part number on file: OR25 (Thermal Engineering Co a Div of Sea Kay Co Inc).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-213-6772. Verify interchangeability with system specifications before substitution.
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.