The O-Ring, cataloged under National Stock Number 5331-01-371-3287, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Invensys Systems (uk) Limited. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Invensys Systems (uk) Limited (CAGE K4263) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-371-3287 |
| Primary Part Number | E1567A/20 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Invensys Systems (uk) Limited |
| 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 |
|---|---|
| E1567A/20 | Invensys Systems (uk) Limited (GBR) |
| N0143XN | Invensys Systems (uk) Limited (GBR) |
| Reference | Meaning |
|---|---|
| E1567A ITEM 20 | 5/1 Secondary reference Invensys Systems (uk) Limited |
| E1567A | 5/1 Secondary reference Invensys Systems (uk) Limited |
| N0143XN | 3/9 Design control — primary reference Foxboro Co the Government Market Development Dept |
NSN 5331-01-371-3287 is a O-Ring, manufactured by Invensys Systems (uk) Limited, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-371-3287 has 2 manufacturer part numbers on file: E1567A/20 (Invensys Systems (uk) Limited), N0143XN (Invensys Systems (uk) Limited).
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.