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Technical Data Sheet
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1843666SAR — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1843666SAR: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include end_item_identification: 250GPM FIRE PUMP NS18436-V40, part_name_assigned_by_controlling_agency: GASKET,IMPELLER NUT. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-584-8702, 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
1843666SAR
NSN: 5330-01-584-8702
FSC: 5330 — Packing and Gasket Materials
CAGE: 78314 — SIMS PUMP VALVE CO, INC (USA)
SPECIFICATIONS
end_item_identification250GPM FIRE PUMP NS18436-V40
part_name_assigned_by_controlling_agencyGASKET,IMPELLER NUT
NSN5330-01-584-8702
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1843666SAR 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
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYGASKET,IMPELLER NUT
END ITEM IDENTIFICATION250GPM FIRE PUMP NS18436-V40
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 1
NS18436-V40 ITEM 66Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1843666SAR?
1843666SAR is a GASKET.
What parts can replace 1843666SAR?
There is 1 known substitute for 1843666SAR: NS18436-V40 ITEM 66. Substitute compatibility should be verified for your specific system.
What is the NSN for 1843666SAR?
1843666SAR is cataloged in the U.S. Government catalog under NSN 5330-01-584-8702. 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.