The Seal,waveguide, cataloged under National Stock Number 5985-01-109-4053, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Frontgrade Technologies Inc.. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-109-4053 |
| Primary Part Number | 67090-050 |
| Item Name | Seal,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Seal Thickness | 0.151 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN |
| Style Designator | FOR RECTANGULAR WAVEGUIDE AND FLANGE |
| Seal Outside Height | 1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN |
| Seal Outside Width | 1.216 INCHES MINIMUM AND 1.224 INCHES MAXIMUM IN |
| Surface Treatment | CHROMATE SINGLE SEAL ALL SURFACES |
| Seal Inside Height | 0.396 INCHES MINIMUM AND 0.404 INCHES MAXIMUM IN |
| Material | ALUMINUM SINGLE SEAL |
| Seal Inside Width | 0.896 INCHES MINIMUM AND 0.904 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 67090-050 | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 67090-050 | 5/9 Secondary reference Microwave Development Company Inc Dba Microwave Development Company Inc |
| 67090-TA | 5/9 Secondary reference Microwave Development Company Inc Dba Microwave Development Company Inc |
| MA1430PA | 3/9 Design control — primary reference U.S. Government activity |
| MA1430PA | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-109-4053 is a Seal,waveguide, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-109-4053 has 1 manufacturer part number on file: 67090-050 (Frontgrade Technologies Inc.).
Key specifications for 67090-050: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Seal Thickness: 0.151 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN; Style Designator: FOR RECTANGULAR WAVEGUIDE AND FLANGE; Seal Outside Height: 1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN. 9 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.
NSN 5985-01-109-4053 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.