PartsTable
Technical Data Sheet
PartsTable / O-RING / JJ/KK.U-/U/O
JJ/KK.U-/U/O ✓ 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 JJ/KK.U-/U/O is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-559-4015, 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
JJ/KK.U-/U/O
NSN: 5331-00-559-4015
FSC: 5331 — O-RING
CAGE: 99657 — MAROTTA CONTROLS INC (USA)
SPECIFICATIONS
Part NumberJJ/KK.U-/U/O
NSN5331-00-559-4015
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: JJ/KK.U-/U/O 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
•
HARDNESS RATING: 85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MINIMUM
•
CENTER HOLE DIAMETER: 0.234 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
OUTSIDE DIAMETER: 0.379 INCHES NOMINAL IN
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: CLEANED IN ACCORDANCE WITH MIL-P-52211/CE/
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-25897,CL 2 MIL SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
•
ELONGATION PERCENTAGE: 125 MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MINIMUM
CENTER HOLE DIAMETER0.234 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
CRITICALITY CODE JUSTIFICATIONZZZY
OUTSIDE DIAMETER0.379 INCHES NOMINAL IN
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSCLEANED IN ACCORDANCE WITH MIL-P-52211/CE/
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-25897,CL 2 MIL SPEC SINGLE MATERIAL RESPONSE
MATERIALRUBBER FLUOROCARBON CLASS FPM
ELONGATION PERCENTAGE125 MAXIMUM
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
NAS1594-010Interchangeable
interchangeable cross-reference
interchangeable
NAS1594Interchangeable
interchangeable cross-reference
interchangeable
NAS1594-010ESInterchangeable
interchangeable cross-reference
interchangeable
4405591-0103CPInterchangeable
interchangeable cross-reference
interchangeable
281712-0001 ITEM 62CPInterchangeable
interchangeable cross-reference
interchangeable
M83248/1-010Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is JJ/KK.U-/U/O?
JJ/KK.U-/U/O is a JJ/KK.U-/U/O.
What parts can replace JJ/KK.U-/U/O?
There are 12 known substitutes for JJ/KK.U-/U/O: NAS1594-010, NAS1594, NAS1594-010ES and 9 more. Substitute compatibility should be verified for your specific system.
Is JJ/KK.U-/U/O still available?
JJ/KK.U-/U/O 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