The O-Ring, cataloged under National Stock Number 5331-01-530-5607, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Bosch Rexroth Corporation Div Industrial Hydraulics. Government technical data includes 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5331-01-530-5607 |
| Primary Part Number | R978728597 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Bosch Rexroth Corporation Div Industrial Hydraulics |
| Status | ACTIVE |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Hardness Rating | 75.0 SHORE DUROMETER A NOMINAL |
| Material Document and Classification | MS-R-19 MIL SPEC SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 1.102 INCHES MINIMUM AND 1.122 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 |
|---|---|
| R978728597 PRIMARY | Bosch Rexroth Corporation Div Industrial Hydraulics (USA) |
| Reference | Meaning |
|---|---|
| 19-68118-122 | 5/9 Secondary reference Fluid System Components, Inc. Div Fluid Systems Components |
| 68118-122 | 5/9 Secondary reference Bosch Rexroth Corporation Div Industrial Hydraulics |
| 19-68118-122 | 5/9 Secondary reference Rexroth Corp the Mobile Hydraulics Div |
NSN 5331-01-530-5607 is a O-Ring, manufactured by Bosch Rexroth Corporation Div Industrial Hydraulics, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-530-5607 has 1 manufacturer part number on file: R978728597 (Bosch Rexroth Corporation Div Industrial Hydraulics).
Key specifications for R978728597: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL; Material Document and Classification: MS-R-19 MIL SPEC SINGLE MATERIAL RESPONSE; Center Hole Diameter: 1.102 INCHES MINIMUM AND 1.122 INCHES MAXIMUM IN. 5 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.