The O-Ring, cataloged under National Stock Number 5331-01-273-1000, 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 6 commercial cross-references from 4 manufacturers, 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 | 5331-01-273-1000 |
| Primary Part Number | MS28775-243 |
| 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 | 4.387 INCHES NOMINAL IN |
| Elongation Percentage | 160 MAXIMUM |
| Temp Rating | -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Center Hole Diameter | 4.094 INCHES MINIMUM AND 4.124 INCHES MAXIMUM IN |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MS28775-243 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| MS28775-243 | Sae International Dba Sae International (USA) |
| SAE-AS28775 | Sae International Dba Sae International (USA) |
| OR243 | Pall Corporation (USA) |
| MIL-R-15624,CLASS 3 | Pall Corporation (USA) |
| MS28775-243 | Society of Automotive Engineers Inc (USA) |
NSN 5331-01-273-1000 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 5331-01-273-1000 has 6 cross-referenced part numbers: MS28775-243 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS28775-243 (Sae International Dba Sae International), SAE-AS28775 (Sae International Dba Sae International), OR243 (Pall Corporation), MIL-R-15624,CLASS 3 (Pall Corporation) and 1 more.
There are 5 known substitutes for 5331-01-273-1000: 5330-00-205-3617, 5331-00-579-7544, 5330-01-249-7222 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for MS28775-243: Peripheral Diameter: 4.387 INCHES NOMINAL IN; Elongation Percentage: 160 MAXIMUM; Temp Rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF; Center Hole Diameter: 4.094 INCHES MINIMUM AND 4.124 INCHES MAXIMUM IN. 8 total characteristics are documented in the Federal Logistics Information System.