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Technical Data Sheet
RAR3408 ✓ 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

The CAP,FILLER OPENING is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-357-3062, 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
RAR3408
NSN: 5340-01-357-3062
FSC: 5340
CAGE: F3015 — NAVAL GROUP SITE DE LORIENT (FRA)
SPECIFICATIONS
Part NumberRAR3408
NSN5340-01-357-3062
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: RAR3408 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 12
120 3/4Interchangeable
interchangeable cross-reference
interchangeable
2510 3/4Interchangeable
interchangeable cross-reference
interchangeable
25625Interchangeable
interchangeable cross-reference
interchangeable
S10-25-FFInterchangeable
interchangeable cross-reference
interchangeable
419977-6Interchangeable
interchangeable cross-reference
interchangeable
419977Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RAR3408?
RAR3408 is a CAP,FILLER OPENING.
What parts can replace RAR3408?
There are 12 known substitutes for RAR3408: 120 3/4, 2510 3/4, 25625 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for RAR3408?
RAR3408 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-357-3062. This indicates validated use in U.S. government and defense supply chains.
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