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Technical Data Sheet
FD4377 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
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PRODUCT OVERVIEW

The CUP,HYDRAULIC BRAKE CYLINDER is a the manufacturer industrial component. Key specifications include material: RUBBER POLYISOPRENE NATURAL CLASS NR, cup_protector: INCLUDED, base_thickness: 0.093 INCHES NOMINAL IN, overall_length: 0.375 INCHES NOMINAL IN, mounting_method: FLAT SOLID BASE, size_designator: 1 IN. IN.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2530-00-537-0782, 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
FD4377
NSN: 2530-00-537-0782
FSC: 2530
CAGE: 63477 — FEDERAL MOGUL CORP SUB WAGNER BRAKE MOOG AUTOMOTIVE DIV (USA)
SPECIFICATIONS
materialRUBBER POLYISOPRENE NATURAL CLASS NR
cup_protectorINCLUDED
base_thickness0.093 INCHES NOMINAL IN
overall_length0.375 INCHES NOMINAL IN
mounting_methodFLAT SOLID BASE
size_designator1 IN. IN
sealing_lip_length0.282 INCHES NOMINAL IN
fsc_application_dataVEHICULAR BRAKES GROUP
base_outside_diameter0.965 INCHES NOMINAL IN
feathered_lip_featureNOT INCLUDED
base_inside_projectionNOT INCLUDED
largest_outside_diameter1.031 INCHES MINIMUM AND 1.047 INCHES MAXIMUM IN
NSN2530-00-537-0782
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CUP,HYDRAULIC BRAKE CYLINDER TITLE COMPONENT PN FD4377 MFR CUP,HYDRAULIC BRAKE CY
KEY FEATURES
LARGEST OUTSIDE DIAMETER: 1.031 INCHES MINIMUM AND 1.047 INCHES MAXIMUM IN
SIZE DESIGNATOR: 1 IN. IN
MATERIAL: RUBBER POLYISOPRENE NATURAL CLASS NR
FSC APPLICATION DATA: VEHICULAR BRAKES GROUP
BASE INSIDE PROJECTION: NOT INCLUDED
CUP PROTECTOR: INCLUDED
SEALING LIP LENGTH: 0.282 INCHES NOMINAL IN
BASE THICKNESS: 0.093 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
LARGEST OUTSIDE DIAMETER1.031 INCHES MINIMUM AND 1.047 INCHES MAXIMUM IN
SIZE DESIGNATOR1 IN. IN
MATERIALRUBBER POLYISOPRENE NATURAL CLASS NR
FSC APPLICATION DATAVEHICULAR BRAKES GROUP
BASE INSIDE PROJECTIONNOT INCLUDED
CUP PROTECTORINCLUDED
SEALING LIP LENGTH0.282 INCHES NOMINAL IN
BASE THICKNESS0.093 INCHES NOMINAL IN
OUTER PERIPHERY BASE GROOVEINCLUDED
OVERALL LENGTH0.375 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
28682Interchangeable
interchangeable cross-reference
interchangeable
031-021-02Interchangeable
interchangeable cross-reference
interchangeable
8057Interchangeable
interchangeable cross-reference
interchangeable
ST128-1Interchangeable
interchangeable cross-reference
interchangeable
2219-963Interchangeable
interchangeable cross-reference
interchangeable
TU5447Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FD4377?
FD4377 is a CUP,HYDRAULIC BRAKE CYLINDER.
What parts can replace FD4377?
There are 16 known substitutes for FD4377: 28682, 031-021-02, 8057 and 13 more. Substitute compatibility should be verified for your specific system.
Is FD4377 still available?
FD4377 is currently cancelled.
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