The O-Ring, cataloged under National Stock Number 5331-01-310-5772, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Zodiac of North America, Inc. Dba Zodiac of North America Inc Div Milpro. Government technical data includes 4 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-310-5772 |
| Primary Part Number | 11RD220B9 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Zodiac of North America, Inc. Dba Zodiac of North America Inc Div Milpro |
| Status | ACTIVE |
| Cross-Sectional Height | 0.075 INCHES NOMINAL IN |
| Color | BLACK |
| Center Hole Diameter | 0.428 INCHES NOMINAL IN |
| Material | RUBBER |
| 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 |
|---|---|
| 11RD220B9 PRIMARY | Zodiac of North America, Inc. Dba Zodiac of North America Inc Div Milpro (USA) |
NSN 5331-01-310-5772 is a O-Ring, manufactured by Zodiac of North America, Inc. Dba Zodiac of North America Inc Div Milpro, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-310-5772 has 1 manufacturer part number on file: 11RD220B9 (Zodiac of North America, Inc. Dba Zodiac of North America Inc Div Milpro).
Key specifications for 11RD220B9: Cross-Sectional Height: 0.075 INCHES NOMINAL IN; Color: BLACK; Center Hole Diameter: 0.428 INCHES NOMINAL IN; End Item Identification: ACFT MODEL HH65A. 4 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.