The O-Ring, cataloged under National Stock Number 5331-01-271-8299, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Clausing Industrial, Inc. Dba Clausing Service Center Div Clausing Service Center. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | Clausing Industrial, Inc. Dba Clausing Service Center Div Clausing Service Center (CAGE 1V923) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-271-8299 |
| Primary Part Number | 27-894 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Clausing Industrial, Inc. Dba Clausing Service Center Div Clausing Service Center |
| 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 |
|---|---|
| 27-894 PRIMARY | Clausing Industrial, Inc. Dba Clausing Service Center Div Clausing Service Center (USA) |
| 412-0030 | Clausing Industrial, Inc. Dba Clausing Service Center Div Clausing Service Center (USA) |
| Reference | Meaning |
|---|---|
| 412-0030 | 5/9 Secondary reference Clausing Service Ctr |
| 27-894 | 5/9 Secondary reference Clausing Corp |
| 27-894 | 3/9 Design control — primary reference Clausing Service Ctr |
NSN 5331-01-271-8299 is a O-Ring, manufactured by Clausing Industrial, Inc. Dba Clausing Service Center Div Clausing Service Center, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-271-8299 has 2 manufacturer part numbers on file: 27-894 (Clausing Industrial, Inc. Dba Clausing Service Center Div Clausing Service Center), 412-0030 (Clausing Industrial, Inc. Dba Clausing Service Center Div Clausing Service Center).
1 possible match (shared part number, not a government interchangeability claim): 4130-01-686-2535. 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.