The O-Ring, cataloged under National Stock Number 5331-01-033-2537, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Lct Electronics. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-033-2537 |
| Primary Part Number | 128976-03 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Lct Electronics |
| Status | ACTIVE |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN |
| Center Hole Diameter | 10.795 INCHES MINIMUM AND 10.855 INCHES MAXIMUM IN |
| Material | RUBBER SILICONE CLASS Q |
| 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 |
|---|---|
| 128976-03 PRIMARY | Lct Electronics (USA) |
| 128910 ITEM 11 | Lct Electronics (USA) |
| Reference | Meaning |
|---|---|
| 128976-03 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-01-033-2537 is a O-Ring, manufactured by Lct Electronics, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-033-2537 has 2 manufacturer part numbers on file: 128976-03 (Lct Electronics), 128910 ITEM 11 (Lct Electronics).
Key specifications for 128976-03: Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN; Center Hole Diameter: 10.795 INCHES MINIMUM AND 10.855 INCHES MAXIMUM IN; Material: RUBBER SILICONE CLASS Q. 3 specifications are documented in the U.S. Government catalog.
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.