The O-Ring, cataloged under National Stock Number 5331-01-016-5561, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Aerocontrolex Group, Inc.. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5331-01-016-5561 |
| Primary Part Number | C212-558027 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Aerocontrolex Group, Inc. |
| Status | CANCELLED |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Elongation Percentage | 125 MAXIMUM |
| Material | RUBBER FLUOROSILICONE CLASS FQ |
| Outside Diameter | 1.441 INCHES NOMINAL IN |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Center Hole Diameter | 1.290 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| C212-558027 | Aerocontrolex Group, Inc. (USA) |
| 212-558-027 | Aerocontrolex Group, Inc. (USA) |
| MIL-R-25988/1 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| M25988/1-027 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 5331PL0845030 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| MIL-DTL-25988/1 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| M25988-1-027ES | Eriks B.v. (NLD) |
| 5331PL1700648 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
NSN 5331-01-016-5561 is a O-Ring, manufactured by Aerocontrolex Group, Inc., classified under FSC 5331 (O-Ring). Status: cancelled.
NSN 5331-01-016-5561 has 8 cross-referenced part numbers: C212-558027 (Aerocontrolex Group, Inc.), 212-558-027 (Aerocontrolex Group, Inc.), MIL-R-25988/1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M25988/1-027 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 5331PL0845030 (Jednolity Indeks Materialowy - Uniform Material Index) and 3 more.
There is 1 known substitute for 5331-01-016-5561: 5331-00-265-1088. Verify interchangeability with system specifications before substitution.
Key specifications for C212-558027: Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Elongation Percentage: 125 MAXIMUM; Material: RUBBER FLUOROSILICONE CLASS FQ; Outside Diameter: 1.441 INCHES NOMINAL IN. 6 total characteristics are documented in the Federal Logistics Information System.
NSN 5331-01-016-5561 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.