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Technical Data Sheet
PartsTable / COMPONENT / 9CA90
9CA90 ✓ 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 5340-00-725-3360, 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
9CA90
NSN: 5340-00-725-3360
FSC: 5340
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
Part Number9CA90
NSN5340-00-725-3360
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 9CA90 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 14
51653Upgraded Successor
successor cross-reference
successor
2390268Interchangeable
interchangeable cross-reference
interchangeable
51653AInterchangeable
interchangeable cross-reference
interchangeable
41653Interchangeable
interchangeable cross-reference
interchangeable
AE-33538-AInterchangeable
interchangeable cross-reference
interchangeable
LP1653Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 9CA90?
9CA90 is a CAP,FILLER OPENING.
What parts can replace 9CA90?
There are 14 known substitutes for 9CA90: 51653, 2390268, 51653A and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 9CA90?
9CA90 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-725-3360. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026