The Seal,plain, cataloged under National Stock Number 5330-00-352-0520, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-00-352-0520 |
| Primary Part Number | 690-400 |
| Item Name | Seal,plain |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites |
| Status | ACTIVE |
| Seal Width | 0.215 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN |
| Housing Bore Diameter | 4.560 INCHES MINIMUM AND 4.600 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | SINGLE LIP |
| Accommodated Shaft Diameter | 3.970 INCHES MINIMUM AND 4.000 INCHES MAXIMUM IN |
| Material | RUBBER SILICONE CLASS Q AND GLASS SEALING ELEMENT |
| Construction | SOLID |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 690-400 | Rsa Engineered Products, Llc Dba Rsa Engineered Products Llc (USA) |
| ST7M328-400 | Rsa Engineered Products, Llc Dba Rsa Engineered Products Llc (USA) |
| 690-400 PRIMARY | Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites (USA) |
| ST7M328-400 PRIMARY | Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites (USA) |
| Reference | Meaning |
|---|---|
| ST7M328-400 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 490-400 | 5/9 Secondary reference Rsa Engineered Products, Llc Dba Rsa Engineered Products Llc |
| NSA8054-64-09 | 5/9 Secondary reference Airbus Group SAS |
NSN 5330-00-352-0520 is a Seal,plain, manufactured by Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-352-0520 has 4 manufacturer part numbers on file: 690-400 (Rsa Engineered Products, Llc Dba Rsa Engineered Products Llc), ST7M328-400 (Rsa Engineered Products, Llc Dba Rsa Engineered Products Llc), 690-400 (Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites), ST7M328-400 (Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites).
1 possible match (shared part number, not a government interchangeability claim): 5930-00-930-5251. Verify interchangeability with system specifications before substitution.
Key specifications for 690-400: Seal Width: 0.215 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN; Housing Bore Diameter: 4.560 INCHES MINIMUM AND 4.600 INCHES MAXIMUM IN; Cross-Sectional Shape Style: SINGLE LIP; Accommodated Shaft Diameter: 3.970 INCHES MINIMUM AND 4.000 INCHES MAXIMUM IN. 6 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.