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PartsTable / COMPONENT / MILB5423TYCSIZE 2
MILB5423TYCSIZE 2 ✓ 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

The BOOT,DUST AND MOISTURE SEAL is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY AND RUBBER SYNTHETIC BODY, thread_class: 2A A, thread_length: 0.188 INCHES NOMINAL IN, thread_series: UN, overall_height: 0.250 INCHES NOMINAL IN, sealing_method: COMPRESSION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-065-0490, 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
MILB5423TYCSIZE 2
NSN: 5340-01-065-0490
FSC: 5340
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialCOPPER ALLOY AND RUBBER SYNTHETIC BODY
thread_class2A A
thread_length0.188 INCHES NOMINAL IN
thread_seriesUN
overall_height0.250 INCHES NOMINAL IN
sealing_methodCOMPRESSION
mounting_methodTHREAD
style_designatorTHRU-HOLE
width_across_flats0.510 INCHES NOMINAL IN
nominal_thread_size0.375 INCHES IN
base_thread_locationINTERNAL
opening_inside_diameter0.188 INCHES NOMINAL IN
NSN5340-01-065-0490
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MILB5423TYCSIZE 2 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
•
THREAD QUANTITY PER INCH: 28
•
THREAD LENGTH: 0.188 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY AND RUBBER SYNTHETIC BODY
•
STYLE DESIGNATOR: THRU-HOLE
•
WIDTH ACROSS FLATS: 0.510 INCHES NOMINAL IN
•
BASE THREAD LOCATION: INTERNAL
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH28
THREAD LENGTH0.188 INCHES NOMINAL IN
MATERIALCOPPER ALLOY AND RUBBER SYNTHETIC BODY
STYLE DESIGNATORTHRU-HOLE
WIDTH ACROSS FLATS0.510 INCHES NOMINAL IN
BASE THREAD LOCATIONINTERNAL
OVERALL HEIGHT0.250 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.375 INCHES IN
SEALING METHODCOMPRESSION
THREAD SERIESUN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
30122Interchangeable
interchangeable cross-reference
interchangeable
40138Interchangeable
interchangeable cross-reference
interchangeable
B94.19 TABLE 1Interchangeable
interchangeable cross-reference
interchangeable
10170Interchangeable
interchangeable cross-reference
interchangeable
M83461/1-012Interchangeable
interchangeable cross-reference
interchangeable
5331PL0658310Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILB5423TYCSIZE 2?
MILB5423TYCSIZE 2 is a BOOT,DUST AND MOISTURE SEAL.
What parts can replace MILB5423TYCSIZE 2?
There are 11 known substitutes for MILB5423TYCSIZE 2: 30122, 40138, B94.19 TABLE 1 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MILB5423TYCSIZE 2?
MILB5423TYCSIZE 2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-065-0490. 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