The O-Ring, cataloged under National Stock Number 5331-01-732-5644, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Schroeder Industries Llc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | Livingston and Haven Inc (CAGE 5F955); Schroeder Industries Llc (CAGE 08832) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-732-5644 |
| Primary Part Number | BFT-211 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Schroeder Industries Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5331-01-732-5644 is a O-Ring, manufactured by Schroeder Industries Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-732-5644 has 2 manufacturer part numbers on file: 7618565 (Livingston and Haven Inc), BFT-211 (Schroeder Industries Llc).
2 possible matches (shared part number, not a government interchangeability claim): 5331-01-732-5649, 5930-01-732-6255. 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.