The O-Ring, cataloged under National Stock Number 5331-01-345-0269, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Tecno Trade S.r.l.. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 5331-01-345-0269 |
| Primary Part Number | MS28775-135 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Tecno Trade S.r.l. |
| Status | ACTIVE |
| Temp Rating | -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Criticality Code Justification | ZZZW |
| Elongation Percentage | 160 MAXIMUM |
| Departure From Cited Document | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Peripheral Diameter | 2.131 INCHES NOMINAL IN |
| Center Hole Diameter | 1.915 INCHES MINIMUM AND 1.935 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| MS28775-135 | Tecno Trade S.r.l. (ITA) |
| Reference | Meaning |
|---|---|
| 845-6556398PC47 | 5/1 Secondary reference Naval Sea Systems Command |
| SAE-AS28775 | 3/1 Design control — primary reference Sae International Dba Sae International |
| MS28775-135 | 4/1 Identification reference U.S. Government activity |
NSN 5331-01-345-0269 is a O-Ring, manufactured by Tecno Trade S.r.l., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-345-0269 has 1 manufacturer part number on file: MS28775-135 (Tecno Trade S.r.l.).
Key specifications for MS28775-135: Temp Rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Criticality Code Justification: ZZZW; Elongation Percentage: 160 MAXIMUM. 8 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.