The Seal,plain Encased, cataloged under National Stock Number 5330-00-135-9143, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Leonardo Spa Helicopters Division - Production Site. Government technical data includes 10 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 | 5330-00-135-9143 |
| Primary Part Number | 525894 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — No Item Name Available |
| Manufacturer | Leonardo Spa Helicopters Division - Production Site |
| Status | ACTIVE |
| Attachment Method | CEMENTED |
| Accommodated Shaft Diameter | 1.500 INCHES NOMINAL IN |
| Seal Width | 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN |
| Case Style | SQUARE |
| Material Document and Classification | S-49 FSCM 76680 MFR REF SINGLE MATERIAL RESPONSE SEALING ELEMENT |
| Housing Bore Diameter | 2.252 INCHES MINIMUM AND 2.256 INCHES MAXIMUM IN |
| Criticality Code Justification | MATT |
| Surface Treatment | CADMIUM CASE |
| Material | RUBBER SILICONE CLASS Q SEALING ELEMENT |
| Sealing Element Style | VERTICAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5330-00-135-9143 is a Seal,plain Encased, manufactured by Leonardo Spa Helicopters Division - Production Site, classified under FSC 5330 (No Item Name Available). Status: active.
NSN 5330-00-135-9143 has 3 cross-referenced part numbers: 525894 (Leonardo Spa Helicopters Division - Production Site), 450136H19 (Federal-Mogul Corp Chassis Products Div), 450136H19 (Federal-Mogul Corp Government Sales Dept).
There are 2 known substitutes for 5330-00-135-9143: 5910-00-056-0556, 5305-00-151-1373. Verify interchangeability with system specifications before substitution.
Key specifications for 525894: Attachment Method: CEMENTED; Accommodated Shaft Diameter: 1.500 INCHES NOMINAL IN; Seal Width: 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN; Case Style: SQUARE. 10 total characteristics are documented in the Federal Logistics Information System.