The O-Ring, cataloged under National Stock Number 5331-01-664-4400, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Zf of South Africa (pty) Ltd. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Zf Boge Elastmetall France (CAGE F0232); Zf of South Africa (pty) Ltd (CAGE SBB61); General Dynamics Land Systems Canadacorp (CAGE 56161) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-664-4400 |
| Primary Part Number | 720.120.103.933 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Zf of South Africa (pty) Ltd |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 720.120.103.933 | Zf Boge Elastmetall France (FRA) |
| 720.120.103.933 PRIMARY | Zf of South Africa (pty) Ltd (ZAF) |
| R0156821 | General Dynamics Land Systems Canadacorp (CAN) |
| R0143877GDLS-C | General Dynamics Land Systems Canadacorp (CAN) |
| Reference | Meaning |
|---|---|
| R0156821-0300 | 7/2 Vendor item drawing reference Denel Vehicle Systems |
| R0156821 | D/9 Drawing number reference only Denel Vehicle Systems |
NSN 5331-01-664-4400 is a O-Ring, manufactured by Zf of South Africa (pty) Ltd, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-664-4400 has 4 manufacturer part numbers on file: 720.120.103.933 (Zf Boge Elastmetall France), 720.120.103.933 (Zf of South Africa (pty) Ltd), R0156821 (General Dynamics Land Systems Canadacorp), R0143877GDLS-C (General Dynamics Land Systems Canadacorp).
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.