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PartsTable / COMPONENT / KC9663
KC9663 ✓ 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 COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 4.938 INCHES NOMINAL IN, length: 7.031 INCHES NOMINAL IN, material: STEEL, inside_width: 4.094 INCHES MINIMUM AND 4.096 INCHES MAXIMUM IN, hole_diameter: 0.469 INCHES NOMINAL IN, body_thickness: 0.250 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-532-9054, 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
KC9663
NSN: 5340-00-532-9054
FSC: 5340
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
width4.938 INCHES NOMINAL IN
length7.031 INCHES NOMINAL IN
materialSTEEL
inside_width4.094 INCHES MINIMUM AND 4.096 INCHES MAXIMUM IN
hole_diameter0.469 INCHES NOMINAL IN
body_thickness0.250 INCHES NOMINAL IN
inside_diameter2.031 INCHES NOMINAL IN
flange_thickness0.875 INCHES NOMINAL IN
special_featuresW/2 POSITIONING HOLES,0.375 IN.DIA,SPACED 6.000 IN.C TO C IN
features_providedOBSERVATION FACILITY
surface_treatmentPAINT
fsc_application_dataGASOLINE RECIPROCATING ENGINES,EXCEPT AIRCRAFT AND COMPONENTS
NSN5340-00-532-9054
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: KC9663 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
•
SECURING DEVICE TYPE: THREADED FASTENER
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
FLANGE THICKNESS: 0.875 INCHES NOMINAL IN
•
INSIDE DIAMETER: 2.031 INCHES NOMINAL IN
•
FEATURES PROVIDED: OBSERVATION FACILITY
•
HOLE DIAMETER: 0.469 INCHES NOMINAL IN
•
FSC APPLICATION DATA: GASOLINE RECIPROCATING ENGINES,EXCEPT AIRCRAFT AND COMPONENTS
•
WIDTH: 4.938 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SECURING DEVICE TYPETHREADED FASTENER
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
FLANGE THICKNESS0.875 INCHES NOMINAL IN
INSIDE DIAMETER2.031 INCHES NOMINAL IN
FEATURES PROVIDEDOBSERVATION FACILITY
HOLE DIAMETER0.469 INCHES NOMINAL IN
FSC APPLICATION DATAGASOLINE RECIPROCATING ENGINES,EXCEPT AIRCRAFT AND COMPONENTS
WIDTH4.938 INCHES NOMINAL IN
HOLE QUANTITY ALONG LENGTH4
FIRST RECESS INSIDE HEIGHT2.125 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
K5-16-23Interchangeable
interchangeable cross-reference
interchangeable
5158859Interchangeable
interchangeable cross-reference
interchangeable
5-16-23Interchangeable
interchangeable cross-reference
interchangeable
15162Interchangeable
interchangeable cross-reference
interchangeable
34498Interchangeable
interchangeable cross-reference
interchangeable
150269Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is KC9663?
KC9663 is a COVER,ACCESS.
What parts can replace KC9663?
There are 13 known substitutes for KC9663: K5-16-23, 5158859, 5-16-23 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for KC9663?
KC9663 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-532-9054. 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