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E5253D ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The HEATER,THERMAL RELEASE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, body_style: EXTERNAL FLANGE, corner_shape: SQUARE ALL CORNERS, overall_length: 0.440 INCHES NOMINAL IN, flange_diameter: 2.980 INCHES NOMINAL IN, body_inside_diameter: 2.300 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 4320-00-103-8375, 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
E5253D
NSN: 4320-00-103-8375
FSC: 4320
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
materialCOPPER ALLOY
body_styleEXTERNAL FLANGE
corner_shapeSQUARE ALL CORNERS
overall_length0.440 INCHES NOMINAL IN
flange_diameter2.980 INCHES NOMINAL IN
body_inside_diameter2.300 INCHES NOMINAL IN
body_outside_diameter2.620 INCHES NOMINAL IN
left_side_flange_thickness0.190 INCHES NOMINAL IN
NSN4320-00-103-8375
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HEATER,THERMAL RELEASE TITLE COMPONENT PN E5253D MFR HEATER,THERMAL RELEASE
KEY FEATURES
•
FLANGE DIAMETER: 2.980 INCHES NOMINAL IN
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY STYLE: EXTERNAL FLANGE
•
LEFT SIDE FLANGE THICKNESS: 0.190 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 2.620 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 2.300 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS (FLIS)
FLANGE DIAMETER2.980 INCHES NOMINAL IN
CORNER SHAPESQUARE ALL CORNERS
BODY STYLEEXTERNAL FLANGE
LEFT SIDE FLANGE THICKNESS0.190 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER2.620 INCHES NOMINAL IN
OVERALL LENGTH0.440 INCHES NOMINAL IN
BODY INSIDE DIAMETER2.300 INCHES NOMINAL IN
MATERIALCOPPER ALLOY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
OLDENInterchangeable
interchangeable cross-reference
interchangeable
A2329Interchangeable
interchangeable cross-reference
interchangeable
E29Interchangeable
interchangeable cross-reference
interchangeable
1559-4-03Interchangeable
interchangeable cross-reference
interchangeable
MU-1Interchangeable
interchangeable cross-reference
interchangeable
1560U4-03Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is E5253D?
E5253D is a HEATER,THERMAL RELEASE.
What parts can replace E5253D?
There are 11 known substitutes for E5253D: OLDEN, A2329, E29 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for E5253D?
E5253D is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-00-103-8375. 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