The O-Ring, cataloged under National Stock Number 5331-01-507-5453, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Hydraulics International, Inc. Dba Hydraulics International Inc. Government technical data includes 6 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 | 5331-01-507-5453 |
| Primary Part Number | MS28778-08 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Hydraulics International, Inc. Dba Hydraulics International Inc |
| Status | ACTIVE |
| Temp Rating | -65.0 FAHRENHEIT AND 180.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.070 INCHES NOMINAL IN |
| Hardness Rating | 90.0 SHORE DUROMETER A NOMINAL |
| Material Document and Classification | MIL-P-5510 MIL SPEC SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 0.176 INCHES NOMINAL 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 |
|---|---|
| MS28778-08 PRIMARY | Hydraulics International, Inc. Dba Hydraulics International Inc (USA) |
NSN 5331-01-507-5453 is a O-Ring, manufactured by Hydraulics International, Inc. Dba Hydraulics International Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-507-5453 has 1 manufacturer part number on file: MS28778-08 (Hydraulics International, Inc. Dba Hydraulics International Inc).
Key specifications for MS28778-08: Temp Rating: -65.0 FAHRENHEIT AND 180.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.070 INCHES NOMINAL IN; Hardness Rating: 90.0 SHORE DUROMETER A NOMINAL; Material Document and Classification: MIL-P-5510 MIL SPEC SINGLE MATERIAL RESPONSE. 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.