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 SYNTHETIC, temp_rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF, hardness_rating: 75.0 SHORE DUROMETER A NOMINAL, outside_diameter: 4.270 INCHES NOMINAL IN, center_hole_diameter: 3.822 INCHES MINIMUM AND 3.878 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 5331-00-579-3165, 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
MS28775-344
NSN:5331-00-579-3165 FSC:5331 — O-RING CAGE:96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
material
RUBBER SYNTHETIC
temp_rating
-65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
hardness_rating
75.0 SHORE DUROMETER A NOMINAL
outside_diameter
4.270 INCHES NOMINAL IN
center_hole_diameter
3.822 INCHES MINIMUM AND 3.878 INCHES MAXIMUM IN
elongation_percentage
125 MAXIMUM
cross-sectional_height
0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
material_document_and_classification
MIL-P-83461 MIL SPEC SINGLE MATERIAL RESPONSE
NSN
5331-00-579-3165
COMPONENT DIAGRAM
KEY FEATURES
•
CROSS-SECTIONAL HEIGHT: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 3.835 INCHES MINIMUM AND 3.865 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 4.232 INCHES MINIMUM AND 4.308 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
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FREQUENTLY ASKED QUESTIONS
What is MS28775-344?
MS28775-344 is a O-RING.
What parts can replace MS28775-344?
There are 13 known substitutes for MS28775-344: 422-6709-1439279ALTBPC21, 563-4105A930848ALT2PC9, 546817 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS28775-344?
MS28775-344 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-579-3165. This indicates validated use in U.S. government and defense supply chains.
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