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Technical Data Sheet
PartsTable / COMPONENT / 999978-10
999978-10 ✓ 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 PLUG ASSEMBLY,SEALING is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-119-6062, 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
999978-10
NSN: 5340-01-119-6062
FSC: 5340
CAGE: 82577 — RAYTHEON COMPANY DBA RAYTHEON (USA)
SPECIFICATIONS
Part Number999978-10
NSN5340-01-119-6062
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 999978-10 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 18
218002Interchangeable
interchangeable cross-reference
interchangeable
19-047F00M00R00Interchangeable
interchangeable cross-reference
interchangeable
G000666-1Interchangeable
interchangeable cross-reference
interchangeable
RC1489DBInterchangeable
interchangeable cross-reference
interchangeable
42D36-02-1AJNInterchangeable
interchangeable cross-reference
interchangeable
42D36-2-1-AJNInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 999978-10?
999978-10 is a PLUG ASSEMBLY,SEALING.
What parts can replace 999978-10?
There are 18 known substitutes for 999978-10: 218002, 19-047F00M00R00, G000666-1 and 15 more. Substitute compatibility should be verified for your specific system.
Is 999978-10 still available?
999978-10 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