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PartsTable / COMPONENT / B25305
B25305 ✓ 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 PISTON is a the manufacturer industrial component. Key specifications include material: LEATHER SEALING ELEMENT A, case_style: SQUARE, seal_width: 0.812 INCHES NOMINAL IN, housing_bore_diameter: 4.501 INCHES NOMINAL IN, sealing_element_style: ANGULAR-OPPOSED, accommodated_shaft_diameter: 3.500 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 1020-00-144-9100, 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
B25305
NSN: 1020-00-144-9100
FSC: 1020
CAGE: 62983 — EATON AEROSPACE, LLC DBA JACKSON SOUTH (USA)
SPECIFICATIONS
materialLEATHER SEALING ELEMENT A
case_styleSQUARE
seal_width0.812 INCHES NOMINAL IN
housing_bore_diameter4.501 INCHES NOMINAL IN
sealing_element_styleANGULAR-OPPOSED
accommodated_shaft_diameter3.500 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN1020-00-144-9100
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PISTON TITLE COMPONENT PN B25305 MFR PISTON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
25305Interchangeable
interchangeable cross-reference
interchangeable
AA7N205Interchangeable
interchangeable cross-reference
interchangeable
350A316Interchangeable
interchangeable cross-reference
interchangeable
9021749Interchangeable
interchangeable cross-reference
interchangeable
758SC5305Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B25305?
B25305 is a PISTON.
What parts can replace B25305?
There are 5 known substitutes for B25305: 25305, AA7N205, 350A316 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B25305?
B25305 is cataloged in the Federal Logistics Information System (FLIS) under NSN 1020-00-144-9100. 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