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4988653 ✓ 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

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL CORROSION RESISTING, end_diameter: 0.9060 INCHES NOMINAL IN, bore_diameter: 0.5620 INCHES NOMINAL IN, overall_height: 0.6880 INCHES NOMINAL IN, surface_treatment: CADMIUM, first_step_diameter: 1.1560 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 5340-00-074-8840, 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
4988653
NSN: 5340-00-074-8840
FSC: 5340
CAGE: 0AHU0 — KALMAR AC INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
end_diameter0.9060 INCHES NOMINAL IN
bore_diameter0.5620 INCHES NOMINAL IN
overall_height0.6880 INCHES NOMINAL IN
surface_treatmentCADMIUM
first_step_diameter1.1560 INCHES NOMINAL IN
NSN5340-00-074-8840
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4988653 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
•
SURFACE TREATMENT: CADMIUM
•
MATERIAL: STEEL CORROSION RESISTING
•
BORE DIAMETER: 0.5620 INCHES NOMINAL IN
•
END DIAMETER: 0.9060 INCHES NOMINAL IN
•
FIRST STEP DIAMETER: 1.1560 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM
MATERIALSTEEL CORROSION RESISTING
OVERALL HEIGHT0.6880 INCHES NOMINAL IN
BORE DIAMETER0.5620 INCHES NOMINAL IN
END DIAMETER0.9060 INCHES NOMINAL IN
FIRST STEP DIAMETER1.1560 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
3327Upgraded Successor
successor cross-reference
successor
792415A-1Upgraded Successor
successor cross-reference
successor
EY43Interchangeable
interchangeable cross-reference
interchangeable
W-L-142Interchangeable
interchangeable cross-reference
interchangeable
9875XInterchangeable
interchangeable cross-reference
interchangeable
GE3327Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4988653?
4988653 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace 4988653?
There are 8 known substitutes for 4988653: 3327, 792415A-1, EY43 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4988653?
4988653 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-074-8840. 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