The O-Ring, cataloged under National Stock Number 5331-01-237-2688, 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 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-237-2688 |
| Primary Part Number | MS28775-216 |
| 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 |
| Center Hole Diameter | 1.097 INCHES MINIMUM AND 1.121 INCHES MAXIMUM IN |
| 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 |
|---|---|
| MS28775-216 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| LL-HX4-5302 | Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA) |
| MIL-P-25732 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 5331-01-237-2688 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 5331-01-237-2688 has 3 cross-referenced part numbers: MS28775-216 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), LL-HX4-5302 (Defense Logistics Agency Dba Defense Supply Center Philadelphia), MIL-P-25732 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).
There are 2 known substitutes for 5331-01-237-2688: 5331-00-641-0231, 5331-01-249-7877. Verify interchangeability with system specifications before substitution.
Key specifications for MS28775-216: Center Hole Diameter: 1.097 INCHES MINIMUM AND 1.121 INCHES MAXIMUM IN; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 3 total characteristics are documented in the Federal Logistics Information System.