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PartsTable / COMPONENT / 642978
642978 ✓ 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 PACKING MATERIAL is a the manufacturer industrial component. Key specifications include nonsupply_items_and_quantities: 79150 633298 GASKET 2 AND 79150 954393 GASKET 1 AND 79150 954392 GASKET 1 AND 79150 642978 SEAL 2. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-281-8911, 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
642978
NSN: 5330-00-281-8911
FSC: 5330
CAGE: 12204 — CHRYSLER REALTY COMPANY LLC DBA DAIMLER CHRYSLER (USA)
SPECIFICATIONS
component_quantity6
nonsupply_items_and_quantities79150 633298 GASKET 2 AND 79150 954393 GASKET 1 AND 79150 954392 GASKET 1 AND 79150 642978 SEAL 2
NSN5330-00-281-8911
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 642978 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
•
FABRICATION METHOD: BRAIDED
•
LENGTH: 4.750 INCHES NOMINAL IN
•
CROSS SECTION OUTSIDE DIAMETER: 0.281 INCHES NOMINAL IN
•
MATERIAL: ASBESTOS
•
CROSS-SECTIONAL SHAPE STYLE: CIRCULAR
TECHNICAL CHARACTERISTICS (FLIS)
FABRICATION METHODBRAIDED
LENGTH4.750 INCHES NOMINAL IN
CROSS SECTION OUTSIDE DIAMETER0.281 INCHES NOMINAL IN
SPECIAL FEATURESJUTE ROPE CORE
MATERIALASBESTOS
CROSS-SECTIONAL SHAPE STYLECIRCULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
103S14Interchangeable
interchangeable cross-reference
interchangeable
2523Interchangeable
interchangeable cross-reference
interchangeable
302677Interchangeable
interchangeable cross-reference
interchangeable
17397Interchangeable
interchangeable cross-reference
interchangeable
902599Interchangeable
interchangeable cross-reference
interchangeable
7669002-519Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 642978?
642978 is a PACKING MATERIAL.
What parts can replace 642978?
There are 16 known substitutes for 642978: 103S14, 2523, 302677 and 13 more. Substitute compatibility should be verified for your specific system.
Is 642978 still available?
642978 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