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1859098 — SEAL,WAVEGUIDE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

1859098: SEAL,WAVEGUIDE.

The SEAL,WAVEGUIDE is a the manufacturer industrial component. Key specifications include material: COPPER SINGLE SEAL, seal_thickness: 0.170 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN, style_designator: FOR ROUND WAVEGUIDE AND FLANGE, seal_inside_diameter: 2.550 INCHES MINIMUM AND 2.570 INCHES MAXIMUM IN, seal_outside_diameter: 3.975 INCHES MINIMUM AND 3.980 INCHES MAXIMUM IN, end_item_identification: NEXT ASSY 1978837 USE ON 1810042; AB-1383A/BPS-16(V), MAST ASSY; WSD: SEAWOLF CLASS SSN A. This part is cataloged in the U.S.

Government catalog under NSN 5985-01-508-9039, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
1859098
NSN: 5985-01-508-9039
FSC: 5985 — Antennas, Waveguides, and Related Equipment
CAGE: 03956 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialCOPPER SINGLE SEAL
seal_thickness0.170 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
style_designatorFOR ROUND WAVEGUIDE AND FLANGE
seal_inside_diameter2.550 INCHES MINIMUM AND 2.570 INCHES MAXIMUM IN
seal_outside_diameter3.975 INCHES MINIMUM AND 3.980 INCHES MAXIMUM IN
end_item_identificationNEXT ASSY 1978837 USE ON 1810042; AB-1383A/BPS-16(V), MAST ASSY; WSD: SEAWOLF CLASS SSN A
NSN5985-01-508-9039
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SEAL,WAVEGUIDE TITLE COMPONENT PN 1859098 MFR SEAL,WAVEGUIDE
KEY FEATURES
•
SEAL THICKNESS: 0.170 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
•
SEAL OUTSIDE DIAMETER: 3.975 INCHES MINIMUM AND 3.980 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: FOR ROUND WAVEGUIDE AND FLANGE
•
SEAL INSIDE DIAMETER: 2.550 INCHES MINIMUM AND 2.570 INCHES MAXIMUM IN
•
MATERIAL: COPPER SINGLE SEAL
TECHNICAL CHARACTERISTICS
SEAL THICKNESS0.170 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
SEAL OUTSIDE DIAMETER3.975 INCHES MINIMUM AND 3.980 INCHES MAXIMUM IN
STYLE DESIGNATORFOR ROUND WAVEGUIDE AND FLANGE
SEAL INSIDE DIAMETER2.550 INCHES MINIMUM AND 2.570 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONNEXT ASSY 1978837 USE ON 1810042; AB-1383A/BPS-16(V), MAST ASSY; WSD: SEAWOLF CLASS SSN A
MATERIALCOPPER SINGLE SEAL
OTHER ITEMS IN FSC 5985 — Antennas, Waveguides, and Related Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5985-00-001-1854 5985-00-001-1862 5985-00-001-1869 5985-00-001-1870 5985-00-001-1871 5985-00-001-1874 5985-00-001-1875 5985-00-001-1876
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1859098?
1859098 is a SEAL,WAVEGUIDE.
What is the NSN for 1859098?
1859098 is cataloged in the U.S. Government catalog under NSN 5985-01-508-9039. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.