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Technical Data Sheet
26439 ✓ 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

TRANSFORMER,POWER AUTOTRANSFORME. Key specifications include material: STEEL COMP 1118 OUTER RACE MEMBER, ring_style: EXTERNAL, usage_design: EXTERNAL, bore_diameter: 0.9995 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN, inclosure_type: FULLY INCLOSED, overall_length: 7.000 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 5330-00-019-8141, 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
26439
NSN: 5330-00-019-8141
FSC: 5330
CAGE: 95201 — NAPCO INTERNATIONAL LLC DBA NAPCO INTERNATIONAL INC (USA)
SPECIFICATIONS
materialSTEEL COMP 1118 OUTER RACE MEMBER
ring_styleEXTERNAL
usage_designEXTERNAL
bore_diameter0.9995 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN
inclosure_typeFULLY INCLOSED
overall_length7.000 INCHES NOMINAL IN
wall_thickness0.175 INCHES NOMINAL IN
working_length17.000 INCHES NOMINAL IN
inside_diameter1.850 INCHES NOMINAL IN
major_thickness0.062 INCHES NOMINAL IN
mounting_methodTHREADED HOLE(S) SINGLE GROUP
first_arm_length2.000 INCHES NOMINAL IN
NSN5330-00-019-8141
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 26439 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
SUPPLEMENTARY FEATURES: CROSS-SECTIONAL SHAPE STYLE:NO.195 IRREGULAR SHAPE FROM FIIG A03200
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESSTYLE DESIGNATOR:NO.60 IRREGULAR SHAPE FROM FIIG A03200
SUPPLEMENTARY FEATURESCROSS-SECTIONAL SHAPE STYLE:NO.195 IRREGULAR SHAPE FROM FIIG A03200
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
M384Interchangeable
Ball8joint,carburet
interchangeable
26439Interchangeable
Ball8joint,carburet
interchangeable
5M1207-001Interchangeable
interchangeable cross-reference
interchangeable
1LA010346Interchangeable
interchangeable cross-reference
interchangeable
4283-18Interchangeable
interchangeable cross-reference
interchangeable
BTS16LSInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 26439?
26439 is a TRANSFORMER,POWER AUTOTRANSFORME.
What parts can replace 26439?
There are 6 known substitutes for 26439: M384, 26439, 5M1207-001 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 26439?
26439 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-019-8141. This indicates validated use in U.S. government and defense supply chains.
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