PartsTable
Technical Data Sheet
MS25178-32 ✓ 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, design_type: FRICTION, overall_diameter: 2.250 INCHES NOMINAL IN, special_features: COLOR RED, inside_diameter_length: 0.531 INCHES NOMINAL IN, round_cap_outside_surface_condition: SMOOTH. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-128-1708, 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
MS25178-32
NSN: 5340-01-128-1708
FSC: 5340
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialPLASTIC
design_typeFRICTION
overall_diameter2.250 INCHES NOMINAL IN
special_featuresCOLOR RED
inside_diameter_length0.531 INCHES NOMINAL IN
round_cap_outside_surface_conditionSMOOTH
material_document_and_classificationL-P-390, TYPE 1, CLASS L, GRADE 1 OR GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE
tube_outside_diameter_for_which_designed2.040 INCHES MINIMUM AND 2.060 INCHES MAXIMUM IN
opening_inside_diameter_for_which_designed1.920 INCHES MINIMUM AND 1.940 INCHES MAXIMUM IN
NSN5340-01-128-1708
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS25178-32 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
MATERIAL: PLASTIC
MATERIAL DOCUMENT AND CLASSIFICATION: L-P-390, TYPE 1, CLASS L, GRADE 1 OR GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE
INSIDE DIAMETER LENGTH: 0.531 INCHES NOMINAL IN
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 2.040 INCHES MINIMUM AND 2.060 INCHES MAXIMUM IN
DESIGN TYPE: FRICTION
ROUND CAP OUTSIDE SURFACE CONDITION: SMOOTH
OVERALL DIAMETER: 2.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC
MATERIAL DOCUMENT AND CLASSIFICATIONL-P-390, TYPE 1, CLASS L, GRADE 1 OR GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE
INSIDE DIAMETER LENGTH0.531 INCHES NOMINAL IN
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED2.040 INCHES MINIMUM AND 2.060 INCHES MAXIMUM IN
DESIGN TYPEFRICTION
ROUND CAP OUTSIDE SURFACE CONDITIONSMOOTH
OVERALL DIAMETER2.250 INCHES NOMINAL IN
SPECIAL FEATURESCOLOR RED
OPENING INSIDE DIAMETER FOR WHICH DESIGNED1.920 INCHES MINIMUM AND 1.940 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
596285Interchangeable
interchangeable cross-reference
interchangeable
MS25178-18Interchangeable
interchangeable cross-reference
interchangeable
411595Interchangeable
interchangeable cross-reference
interchangeable
N215EC20Interchangeable
interchangeable cross-reference
interchangeable
AS85049-41Interchangeable
interchangeable cross-reference
interchangeable
1219270-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy MS25178-32?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is MS25178-32?
MS25178-32 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace MS25178-32?
There are 8 known substitutes for MS25178-32: 596285, MS25178-18, 411595 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS25178-32?
MS25178-32 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-128-1708. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MS25178-32