The O-Ring, cataloged under National Stock Number 5331-01-188-1694, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 8 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-188-1694 |
| Primary Part Number | MS28775-325 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| Status | ACTIVE |
| Peripheral Diameter | 1.895 INCHES NOMINAL IN |
| Temp Rating | -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 1.875 INCHES NOMINAL IN |
| Center Hole Diameter | 1.125 INCHES NOMINAL IN |
| Departure From Cited Document | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Criticality Code Justification | ZZZW |
| Elongation Percentage | 160 MAXIMUM |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MS28775-325 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| V60 PC 21 | Hunt Valve Company Inc Dba Union Flonetics (USA) |
| SAE-AS28775 | Sae International Dba Sae International (USA) |
NSN 5331-01-188-1694 is a O-Ring, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5331 (O-Ring). Status: active.
NSN 5331-01-188-1694 has 3 cross-referenced part numbers: MS28775-325 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), V60 PC 21 (Hunt Valve Company Inc Dba Union Flonetics), SAE-AS28775 (Sae International Dba Sae International).
There is 1 known substitute for 5331-01-188-1694: 5331-00-580-3846. Verify interchangeability with system specifications before substitution.
Key specifications for MS28775-325: Peripheral Diameter: 1.895 INCHES NOMINAL IN; Temp Rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF; Cross-Sectional Height: 1.875 INCHES NOMINAL IN; Center Hole Diameter: 1.125 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.