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 BUTADIENE-ACRYLONITRILE CLASS NBR, temp_rating: -65.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF, hardness_rating: 65.0 SHORE DUROMETER A NOMINAL, outside_diameter: 4.762 INCHES NOMINAL IN, center_hole_diameter: 4.469 INCHES MINIMUM AND 4.499 INCHES MAXIMUM IN, elongation_percentage: 200 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 5331-00-928-9732, 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
MS9021-246
NSN:5331-00-928-9732 FSC:5331 — O-RING CAGE:96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
material
RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
temp_rating
-65.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF
hardness_rating
65.0 SHORE DUROMETER A NOMINAL
outside_diameter
4.762 INCHES NOMINAL IN
center_hole_diameter
4.469 INCHES MINIMUM AND 4.499 INCHES MAXIMUM IN
elongation_percentage
200 MAXIMUM
cross-sectional_height
0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
NSN
5331-00-928-9732
COMPONENT DIAGRAM
KEY FEATURES
•
OUTSIDE DIAMETER: 4.762 INCHES NOMINAL IN
•
HARDNESS RATING: 65.0 SHORE DUROMETER A NOMINAL
•
CENTER HOLE DIAMETER: 4.469 INCHES MINIMUM AND 4.499 INCHES MAXIMUM IN
•
ELONGATION PERCENTAGE: 200 MAXIMUM
•
TEMP RATING: -65.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
•
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
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FREQUENTLY ASKED QUESTIONS
What is MS9021-246?
MS9021-246 is a O-RING.
What parts can replace MS9021-246?
There are 16 known substitutes for MS9021-246: 2-246, 20A11EM246, S2C246 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS9021-246?
MS9021-246 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-928-9732. This indicates validated use in U.S. government and defense supply chains.
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