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1818397 — BOOT,DUST AND MOISTURE SEAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1818397: 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: 1.250 INCHES NOMINAL IN, sealing_method: COMPRESSION, mounting_method: COMPRESSION AND FRICTION, style_designator: CLOSED END, base_outside_diameter: 0.743 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-083-8177, 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
1818397
NSN: 5340-01-083-8177
FSC: 5340 — Hardware, Commercial
CAGE: 03956 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC BODY
overall_height1.250 INCHES NOMINAL IN
sealing_methodCOMPRESSION
mounting_methodCOMPRESSION AND FRICTION
style_designatorCLOSED END
base_outside_diameter0.743 INCHES NOMINAL IN
material_document_and_classificationMIL-R-6855,CL 2,GR 50,TY A MIL SPEC SINGLE MATERIAL RESPONSE BODY
hazardous_locations/environmental_protectionDUSTPROOF-NEMA TYPE 13
NSN5340-01-083-8177
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1818397 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
•
SEALING METHOD: COMPRESSION
•
MOUNTING METHOD: COMPRESSION AND FRICTION
•
STYLE DESIGNATOR: CLOSED END
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-6855,CL 2,GR 50,TY A MIL SPEC SINGLE MATERIAL RESPONSE BODY
•
BASE OUTSIDE DIAMETER: 0.743 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC BODY
•
HAZARDOUS LOCATIONS/ENVIRONMENTAL PROTECTION: DUSTPROOF-NEMA TYPE 13
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.250 INCHES NOMINAL IN
SEALING METHODCOMPRESSION
MOUNTING METHODCOMPRESSION AND FRICTION
STYLE DESIGNATORCLOSED END
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-6855,CL 2,GR 50,TY A MIL SPEC SINGLE MATERIAL RESPONSE BODY
BASE OUTSIDE DIAMETER0.743 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC BODY
HAZARDOUS LOCATIONS/ENVIRONMENTAL PROTECTIONDUSTPROOF-NEMA TYPE 13
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 1818397?
1818397 is a BOOT,DUST AND MOISTURE SEAL.
What is the NSN for 1818397?
1818397 is cataloged in the U.S. Government catalog under NSN 5340-01-083-8177. 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.