The O-Ring, cataloged under National Stock Number 5331-00-168-5897, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Freudenberg Technical Products. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | Freudenberg Technical Products (CAGE K0640) |
| Parameter | Value |
|---|---|
| NSN | 5331-00-168-5897 |
| Primary Part Number | R2050 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Freudenberg Technical Products |
| 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 |
|---|---|
| R2050 | Freudenberg Technical Products (GBR) |
| Reference | Meaning |
|---|---|
| W2987280PC104 | C/1 Advisory reference — outside the item-of-supply concept Ge Power Conversion Uk Ltd |
| W2987280PC104 | 5/9 Secondary reference Alstom T&d Ltd, Electrical Machines |
| W2987280PC104 | 5/9 Secondary reference Alstom Power Conversion Ltd,electrical Machines |
| R2050 | 3/9 Design control — primary reference Capitol Engine Co, Inc Dba Salmini Worldwide |
NSN 5331-00-168-5897 is a O-Ring, manufactured by Freudenberg Technical Products, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-168-5897 has 1 manufacturer part number on file: R2050 (Freudenberg Technical Products).
1 possible match (shared part number, not a government interchangeability claim): 5961-00-917-3509. 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.