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Technical Data Sheet

MS25178-20 — Technical Data Sheet

✓ 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

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: PLASTIC, overall_diameter: 1.47 INCHES NOMINAL IN, special_features: COLOR RED, part_name_assigned_by_controlling_agency: COVER, ELECTRICAL CONNECTOR. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-660-5248, 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
MS25178-20
NSN: 5340-00-660-5248
FSC: 5340
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialPLASTIC
overall_diameter1.47 INCHES NOMINAL IN
special_featuresCOLOR RED
part_name_assigned_by_controlling_agencyCOVER, ELECTRICAL CONNECTOR
NSN5340-00-660-5248
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS25178-20 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
•
OVERALL DIAMETER: 1.47 INCHES NOMINAL IN
•
MATERIAL: PLASTIC
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESCOLOR RED
PART NAME ASSIGNED BY CONTROLLING AGENCYCOVER, ELECTRICAL CONNECTOR
OVERALL DIAMETER1.47 INCHES NOMINAL IN
MATERIALPLASTIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
MS90376-20RUpgraded Successor
successor cross-reference
successor
0164443X00Upgraded Successor
successor cross-reference
successor
EC20Upgraded Successor
successor cross-reference
successor
EC20-CUpgraded Successor
successor cross-reference
successor
596285Interchangeable
interchangeable cross-reference
interchangeable
MS25178-18Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS25178-20?
MS25178-20 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace MS25178-20?
There are 28 known substitutes for MS25178-20: MS90376-20R, 0164443X00, EC20 and 25 more. Substitute compatibility should be verified for your specific system.
Is MS25178-20 still available?
MS25178-20 is currently cancelled.
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