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1854844 — BOOT,DUST AND MOISTURE SEAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1854844: BOOT,DUST AND MOISTURE SEAL.

The BOOT,DUST AND MOISTURE SEAL is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC BODY, overall_height: 0.220 INCHES NOMINAL IN, style_designator: THRU-HOLE, body_outside_diameter: 0.690 INCHES NOMINAL IN, opening_inside_diameter: 0.340 INCHES NOMINAL IN, material_document_and_classification: MIL-R-6855,GRADE 4-40 MIL SPEC SINGLE MATERIAL RESPONSE BODY. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-078-5988, 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
1854844
NSN: 5340-01-078-5988
FSC: 5340 — Hardware, Commercial
CAGE: 21877 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC BODY
overall_height0.220 INCHES NOMINAL IN
style_designatorTHRU-HOLE
body_outside_diameter0.690 INCHES NOMINAL IN
opening_inside_diameter0.340 INCHES NOMINAL IN
material_document_and_classificationMIL-R-6855,GRADE 4-40 MIL SPEC SINGLE MATERIAL RESPONSE BODY
hazardous_locations/environmental_protectionOIL RESISTANT AND OZONE RESISTANT
NSN5340-01-078-5988
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1854844 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OPENING INSIDE DIAMETER: 0.340 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 0.690 INCHES NOMINAL IN
•
STYLE DESIGNATOR: THRU-HOLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-6855,GRADE 4-40 MIL SPEC SINGLE MATERIAL RESPONSE BODY
•
MATERIAL: RUBBER SYNTHETIC BODY
•
HAZARDOUS LOCATIONS/ENVIRONMENTAL PROTECTION: OIL RESISTANT AND OZONE RESISTANT
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.220 INCHES NOMINAL IN
OPENING INSIDE DIAMETER0.340 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.690 INCHES NOMINAL IN
STYLE DESIGNATORTHRU-HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-6855,GRADE 4-40 MIL SPEC SINGLE MATERIAL RESPONSE BODY
MATERIALRUBBER SYNTHETIC BODY
HAZARDOUS LOCATIONS/ENVIRONMENTAL PROTECTIONOIL RESISTANT AND OZONE RESISTANT
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
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 1854844?
1854844 is a BOOT,DUST AND MOISTURE SEAL.
What is the NSN for 1854844?
1854844 is cataloged in the U.S. Government catalog under NSN 5340-01-078-5988. 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.