The O-Ring, cataloged under National Stock Number 5331-01-634-0645, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Exlar Corporation. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-634-0645 |
| Primary Part Number | 41255 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Exlar Corporation |
| Status | ACTIVE |
| Temp Rating | 250.0 FAHRENHEIT DEGF |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| Center Hole Diameter | 3.239 INCHES NOMINAL IN |
| Cross-Sectional Height | 0.070 INCHES NOMINAL IN |
| Hardness Rating | 75.0 SHORE DUROMETER A NOMINAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 40230 ITEM 118 | Exlar Corporation (USA) |
| 41255 PRIMARY | Exlar Corporation (USA) |
NSN 5331-01-634-0645 is a O-Ring, manufactured by Exlar Corporation, classified under FSC 5331 (O-Ring). Status: active.
NSN 5331-01-634-0645 has 2 cross-referenced part numbers: 40230 ITEM 118 (Exlar Corporation), 41255 (Exlar Corporation).
There are 5 known substitutes for 5331-01-634-0645: 5935-00-283-3762, 5330-00-410-6499, 6210-01-007-3655 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 41255: End Item Identification: ACTUATOR; Temp Rating: 250.0 FAHRENHEIT DEGF; Material: RUBBER FLUOROCARBON CLASS FPM; Center Hole Diameter: 3.239 INCHES NOMINAL IN. 7 total characteristics are documented in the Federal Logistics Information System.