The O-Ring, cataloged under National Stock Number 5331-01-596-2475, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Trelleborg Sealing Solutions Us, Inc.. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 5331-01-596-2475 |
| Primary Part Number | NAS1611-118A |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Trelleborg Sealing Solutions Us, Inc. |
| Status | ACTIVE |
| Cross-Sectional Height | 0.103 INCHES NOMINAL IN |
| Center Hole Diameter | 0.862 INCHES NOMINAL IN |
| Material | RUBBER ETHYLENE-PROPYLENE CLASS EPM |
| 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 |
|---|---|
| NAS1611-118A | Trelleborg Sealing Solutions Us, Inc. (USA) |
| NAS1611-118A | Freudenberg-Nok General Partnership Dba International Seal Co Inc (USA) |
| NAS1611-118A | Polymod Technologies, Inc. Dba Polymod Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| NAS1611 | 5/9 Secondary reference U.S. Government activity |
| NAS1611-118A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5331-01-596-2475 is a O-Ring, manufactured by Trelleborg Sealing Solutions Us, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-596-2475 has 3 manufacturer part numbers on file: NAS1611-118A (Trelleborg Sealing Solutions Us, Inc.), NAS1611-118A (Freudenberg-Nok General Partnership Dba International Seal Co Inc), NAS1611-118A (Polymod Technologies, Inc. Dba Polymod Technologies Inc).
Key specifications for NAS1611-118A: Cross-Sectional Height: 0.103 INCHES NOMINAL IN; Special Features: ITEM IS FAA CERTIFIED; Center Hole Diameter: 0.862 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: O-RING,SPECIAL. 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.