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1820185 — BUMPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1820185: BUMPER.

The BUMPER is a the manufacturer industrial component. Key specifications include material: RUBBER, overall_width: 0.5400 INCHES NOMINAL IN, overall_height: 0.2500 INCHES NOMINAL IN, overall_length: 0.7800 INCHES NOMINAL IN, style_designator: RECTANGULAR, material_document_and_classification: MIL-R-6855, CLASS 2, TYPE A, GRADE 60 MIL SPEC SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-389-8750, 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
1820185
NSN: 5340-01-389-8750
FSC: 5340 — Hardware, Commercial
CAGE: 03956 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialRUBBER
overall_width0.5400 INCHES NOMINAL IN
overall_height0.2500 INCHES NOMINAL IN
overall_length0.7800 INCHES NOMINAL IN
style_designatorRECTANGULAR
material_document_and_classificationMIL-R-6855, CLASS 2, TYPE A, GRADE 60 MIL SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-389-8750
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1820185 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
•
STYLE DESIGNATOR: RECTANGULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-6855, CLASS 2, TYPE A, GRADE 60 MIL SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.2500 INCHES NOMINAL IN
STYLE DESIGNATORRECTANGULAR
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-6855, CLASS 2, TYPE A, GRADE 60 MIL SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH0.7800 INCHES NOMINAL IN
OVERALL WIDTH0.5400 INCHES NOMINAL IN
MATERIALRUBBER
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
Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1820185?
1820185 is a BUMPER.
What is the NSN for 1820185?
1820185 is cataloged in the U.S. Government catalog under NSN 5340-01-389-8750. 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.