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 FLUOROSILICONE CLASS FQ, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 12.395 INCHES NOMINAL IN, center_hole_diameter: 11.910 INCHES MINIMUM AND 12.040 INCHES MAXIMUM IN, elongation_percentage: 125 MAXIMUM, cross-sectional_height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-118-4156, 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
M25988/1-381
NSN:5331-00-118-4156 FSC:5331 — O-RING CAGE:81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
material
RUBBER FLUOROSILICONE CLASS FQ
hardness_rating
70.0 SHORE DUROMETER A NOMINAL
outside_diameter
12.395 INCHES NOMINAL IN
center_hole_diameter
11.910 INCHES MINIMUM AND 12.040 INCHES MAXIMUM IN
elongation_percentage
125 MAXIMUM
cross-sectional_height
0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
NSN
5331-00-118-4156
COMPONENT DIAGRAM
KEY FEATURES
•
MATERIAL: RUBBER FLUOROSILICONE CLASS FQ
•
CENTER HOLE DIAMETER: 11.910 INCHES MINIMUM AND 12.040 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
OUTSIDE DIAMETER: 12.395 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL
RUBBER FLUOROSILICONE CLASS FQ
CENTER HOLE DIAMETER
11.910 INCHES MINIMUM AND 12.040 INCHES MAXIMUM IN
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FREQUENTLY ASKED QUESTIONS
What is M25988/1-381?
M25988/1-381 is a O-RING.
What parts can replace M25988/1-381?
There are 5 known substitutes for M25988/1-381: 68667, 4980261, B68667 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M25988/1-381?
M25988/1-381 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-118-4156. This indicates validated use in U.S. government and defense supply chains.
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