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FLAG26 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

SEAT,HELICAL COMPRESSION SPRING. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-143-6657, 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
FLAG26
NSN: 5340-00-143-6657
FSC: 5340
CAGE: 30898 — WIENS METAL PRODUCTS INC ROAD EQUIPMENT DIV (USA)
SPECIFICATIONS
Part NumberFLAG26
NSN5340-00-143-6657
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: FLAG26 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
399196-2Interchangeable
interchangeable cross-reference
interchangeable
4206Interchangeable
interchangeable cross-reference
interchangeable
914077-1Interchangeable
interchangeable cross-reference
interchangeable
210AP20-4505Interchangeable
interchangeable cross-reference
interchangeable
AD12-38Interchangeable
interchangeable cross-reference
interchangeable
SAC207Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FLAG26?
FLAG26 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace FLAG26?
There are 28 known substitutes for FLAG26: 399196-2, 4206, 914077-1 and 25 more. Substitute compatibility should be verified for your specific system.
Is FLAG26 still available?
FLAG26 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026