The O-Ring, cataloged under National Stock Number 5331-01-418-9135, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Ralbo Inc. Government technical data includes 4 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-418-9135 |
| Primary Part Number | AS568A-238 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Ralbo Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Center Hole Diameter | 3.460 INCHES MINIMUM AND 3.508 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-G-22050 MIL SPEC SINGLE MATERIAL RESPONSE |
| Material | RUBBER ETHYLENE-PROPYLENE CLASS EPM |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| AS568A-238 | Ralbo Inc (USA) |
| AS568-238 | Zf Industrieantriebe Witten Gmbh (DEU) |
| 2-238E688-70 | Parker-Hannifin Corp Div O-Ring Division (USA) |
NSN 5331-01-418-9135 is a O-Ring, manufactured by Ralbo Inc, classified under FSC 5331 (O-Ring). Status: active.
NSN 5331-01-418-9135 has 3 cross-referenced part numbers: AS568A-238 (Ralbo Inc), AS568-238 (Zf Industrieantriebe Witten Gmbh), 2-238E688-70 (Parker-Hannifin Corp Div O-Ring Division).
There are 6 known substitutes for 5331-01-418-9135: 5331-00-171-6411, 5331-00-172-7223, 5331-00-894-1968 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for AS568A-238: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Center Hole Diameter: 3.460 INCHES MINIMUM AND 3.508 INCHES MAXIMUM IN; Material Document and Classification: MIL-G-22050 MIL SPEC SINGLE MATERIAL RESPONSE; Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM. 4 total characteristics are documented in the Federal Logistics Information System.