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Technical Data Sheet
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340398S ✓ 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 SEAL,OIL is a the manufacturer industrial component. Key specifications include special_features: ACTION ID 45400364. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-016-3625, 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
340398S
NSN: 5330-00-016-3625
FSC: 5330
CAGE: 73160 — FEDERAL-MOGUL CORP POWERTRAIN PRODUCTS DIV (USA)
SPECIFICATIONS
special_featuresACTION ID 45400364
NSN5330-00-016-3625
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 340398S 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 (FLIS)
SPECIAL FEATURESACTION ID 45400364
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
8677Interchangeable
interchangeable cross-reference
interchangeable
079-8677Interchangeable
interchangeable cross-reference
interchangeable
ASTM-D5118Interchangeable
interchangeable cross-reference
interchangeable
43-1617Interchangeable
interchangeable cross-reference
interchangeable
40398Interchangeable
interchangeable cross-reference
interchangeable
11211873Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 340398S?
340398S is a SEAL,OIL.
What parts can replace 340398S?
There are 17 known substitutes for 340398S: 8677, 079-8677, ASTM-D5118 and 14 more. Substitute compatibility should be verified for your specific system.
Is 340398S still available?
340398S 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