The O-Ring, cataloged under National Stock Number 5331-01-138-2241, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Mission Systems Orchard Park Inc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-138-2241 |
| Primary Part Number | 99136-55-15 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Mission Systems Orchard Park Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.075 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN |
| Hardness Rating | 80.0 SHORE DUROMETER A NOMINAL |
| Center Hole Diameter | 0.463 INCHES MINIMUM AND 0.473 INCHES MAXIMUM IN |
| Material | RUBBER ETHYLENE-PROPYLENE CLASS EPM |
| 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 |
|---|---|
| 99136-55-15 PRIMARY | Mission Systems Orchard Park Inc (USA) |
| Reference | Meaning |
|---|---|
| 99136-55-15 | 5/9 Secondary reference American Safety Flight Systems Inc |
| 99136-55-15 | 5/9 Secondary reference Conax Florida Corporation |
| 8148650 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5331-01-138-2241 is a O-Ring, manufactured by Mission Systems Orchard Park Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-138-2241 has 1 manufacturer part number on file: 99136-55-15 (Mission Systems Orchard Park Inc).
Key specifications for 99136-55-15: Cross-Sectional Height: 0.075 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN; Hardness Rating: 80.0 SHORE DUROMETER A NOMINAL; Center Hole Diameter: 0.463 INCHES MINIMUM AND 0.473 INCHES MAXIMUM IN; Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM. 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.