Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW
The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROCARBON CLASS FPM, temp_rating: -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF, hardness_rating: 75.0 SHORE DUROMETER A NOMINAL, outside_diameter: 18.375 INCHES NOMINAL IN, center_hole_diameter: 17.870 INCHES MINIMUM AND 18.040 INCHES MAXIMUM IN, elongation_percentage: 125 MAXIMUM. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-005-0534, 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
MS9388-387
NSN:5331-01-005-0534 FSC:5331 — O-RING CAGE:96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
material
RUBBER FLUOROCARBON CLASS FPM
temp_rating
-20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
hardness_rating
75.0 SHORE DUROMETER A NOMINAL
outside_diameter
18.375 INCHES NOMINAL IN
center_hole_diameter
17.870 INCHES MINIMUM AND 18.040 INCHES MAXIMUM IN
elongation_percentage
125 MAXIMUM
cross-sectional_height
0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
NSN
5331-01-005-0534
COMPONENT DIAGRAM
KEY FEATURES
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
CENTER HOLE DIAMETER: 17.870 INCHES MINIMUM AND 18.040 INCHES MAXIMUM IN
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
•
TEMP RATING: -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 18.375 INCHES NOMINAL IN
•
HARDNESS RATING: 75.0 SHORE DUROMETER A NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
ELONGATION PERCENTAGE
125 MAXIMUM
CENTER HOLE DIAMETER
17.870 INCHES MINIMUM AND 18.040 INCHES MAXIMUM IN
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FREQUENTLY ASKED QUESTIONS
What is MS9388-387?
MS9388-387 is a O-RING.
What parts can replace MS9388-387?
There are 25 known substitutes for MS9388-387: 8505, 181-38, 48306 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS9388-387?
MS9388-387 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-005-0534. This indicates validated use in U.S. government and defense supply chains.
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