The O-Ring, cataloged under National Stock Number 5331-00-526-7677, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is L3harris Technologies, Inc. Div Space and Airborne Systems. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-526-7677 |
| Primary Part Number | 18305 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | L3harris Technologies, Inc. Div Space and Airborne Systems |
| Status | ACTIVE |
| Cross-Sectional Height | 0.147 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN |
| Center Hole Diameter | 0.841 INCHES MINIMUM AND 0.853 INCHES MAXIMUM IN |
| Material | RUBBER SILICONE CLASS Q |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 53A68C99-4 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 53A68C99-4 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 18305 PRIMARY | L3harris Technologies, Inc. Div Space and Airborne Systems (USA) |
NSN 5331-00-526-7677 is a O-Ring, manufactured by L3harris Technologies, Inc. Div Space and Airborne Systems, classified under FSC 5331 (O-Ring). Status: active.
NSN 5331-00-526-7677 has 3 cross-referenced part numbers: 53A68C99-4 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 53A68C99-4 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 18305 (L3harris Technologies, Inc. Div Space and Airborne Systems).
There are 7 known substitutes for 5331-00-526-7677: 5950-00-084-3412, 3120-00-434-5162, 4710-00-737-9590 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for 18305: Cross-Sectional Height: 0.147 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN; Center Hole Diameter: 0.841 INCHES MINIMUM AND 0.853 INCHES MAXIMUM IN; Material: RUBBER SILICONE CLASS Q. 3 total characteristics are documented in the Federal Logistics Information System.