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556595 ✓ Verified by PartsTable
bluechip · 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 COVER AND SEAL,VALVE is a bluechip industrial component. Key specifications include end_item_identification: 1660-00-791-9133; REGULATOR,AIR PRESSURE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 1660-00-735-8362, 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
556595
NSN: 1660-00-735-8362
FSC: 1660
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
end_item_identification1660-00-791-9133; REGULATOR,AIR PRESSURE
general_characteristics_item_description5.550 IN. DIA SEAL BY 0.080 IN. THK W/0.203 IN. DIA 8 HOLES AND 5-0.203IN. DIA HOLE ON 3.190 IN. DIA BC BY 2.700 IN. ID IN
NSN1660-00-735-8362
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: bluechip COVER AND SEAL,VALVE TITLE COMPONENT PN 556595 MFR bluechip COVER AND SEAL,VALVE
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: 5.550 IN. DIA SEAL BY 0.080 IN. THK W/0.203 IN. DIA 8 HOLES AND 5-0.203IN. DIA HOLE ON 3.190 IN. DIA BC BY 2.700 IN. ID IN
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATION1660-00-791-9133; REGULATOR,AIR PRESSURE
GENERAL CHARACTERISTICS ITEM DESCRIPTION5.550 IN. DIA SEAL BY 0.080 IN. THK W/0.203 IN. DIA 8 HOLES AND 5-0.203IN. DIA HOLE ON 3.190 IN. DIA BC BY 2.700 IN. ID IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
MA748T/3Interchangeable
interchangeable cross-reference
interchangeable
LM748H/883Interchangeable
interchangeable cross-reference
interchangeable
7902653Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 556595?
556595 is a COVER AND SEAL,VALVE manufactured by bluechip.
What parts can replace 556595?
There are 3 known substitutes for 556595: MA748T/3, LM748H/883, 7902653. Substitute compatibility should be verified for your specific system.
What is the NSN for 556595?
556595 is cataloged in the Federal Logistics Information System (FLIS) under NSN 1660-00-735-8362. 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