The O-Ring, cataloged under National Stock Number 5331-00-351-6971, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5331-00-351-6971 |
| Primary Part Number | MIL-DTL-25988/2 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| Status | CANCELLED |
| Elongation Percentage | 125 MAXIMUM |
| Material | RUBBER |
| Center Hole Diameter | 2.339 INCHES MINIMUM AND 2.379 INCHES MAXIMUM IN |
| Outside Diameter | 2.637 INCHES NOMINAL IN |
| Hardness Rating | 75.0 SHORE DUROMETER A NOMINAL |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MIL-DTL-25988/2 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| M25988/2-229 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MIL-R-25988B | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| S9412-229 | Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix (USA) |
| 5331PL0813745 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
NSN 5331-00-351-6971 is a O-Ring, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5331 (O-Ring). Status: cancelled.
NSN 5331-00-351-6971 has 5 cross-referenced part numbers: MIL-DTL-25988/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M25988/2-229 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-R-25988B (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), S9412-229 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix), 5331PL0813745 (Jednolity Indeks Materialowy - Uniform Material Index).
There are 9 known substitutes for 5331-00-351-6971: 5330-00-153-1041, 5331-00-211-8040, 5331-00-401-4902 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for MIL-DTL-25988/2: Elongation Percentage: 125 MAXIMUM; Material: RUBBER; Center Hole Diameter: 2.339 INCHES MINIMUM AND 2.379 INCHES MAXIMUM IN; Outside Diameter: 2.637 INCHES NOMINAL IN. 6 total characteristics are documented in the Federal Logistics Information System.
NSN 5331-00-351-6971 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.