The O-Ring, cataloged under National Stock Number 5331-01-235-0137, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 6 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-235-0137 |
| Primary Part Number | MS28775-320 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Temp Rating | -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Outside Diameter | 1.520 INCHES NOMINAL IN |
| Elongation Percentage | 160 MAXIMUM |
| Center Hole Diameter | 1.094 INCHES MINIMUM AND 1.106 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 | X |
| Part Number | Manufacturer |
|---|---|
| MS28775-320 | Thales Australia - Bendigo Land & Joint Systems (AUS) |
| MS28775-320 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| MIL-P-25732 | 5/9 Secondary reference U.S. Government activity |
| SAE-AS28775 | 3/1 Design control — primary reference Sae International Dba Sae International |
| AS28775 | 5/9 Secondary reference U.S. Government activity |
| MIL-P-25732 | 5/9 Secondary reference Sae International Dba Sae International |
| MS28775-320 | 5/9 Secondary reference U.S. Government activity |
| MS28775-320 | 5/9 Secondary reference U.S. Government activity |
| AS28775 | 5/9 Secondary reference Sae International Dba Sae International |
NSN 5331-01-235-0137 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-235-0137 has 2 manufacturer part numbers on file: MS28775-320 (Thales Australia - Bendigo Land & Joint Systems), MS28775-320 (Sae International Dba Sae International).
Key specifications for MS28775-320: Temp Rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN; Outside Diameter: 1.520 INCHES NOMINAL IN; Elongation Percentage: 160 MAXIMUM. 6 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.