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: -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 3.480 INCHES MINIMUM AND 3.544 INCHES MAXIMUM IN, center_hole_diameter: 3.219 INCHES MINIMUM AND 3.249 INCHES MAXIMUM IN, elongation_percentage: 331 MAXIMUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-451-9005, 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
MS21569 CLASS 1
NSN:5331-00-451-9005 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 BUTADIENE-ACRYLONITRILE CLASS NBR
temp_rating
-30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
hardness_rating
70.0 SHORE DUROMETER A NOMINAL
outside_diameter
3.480 INCHES MINIMUM AND 3.544 INCHES MAXIMUM IN
center_hole_diameter
3.219 INCHES MINIMUM AND 3.249 INCHES MAXIMUM IN
elongation_percentage
331 MAXIMUM
cross-sectional_height
0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
NSN
5331-00-451-9005
COMPONENT DIAGRAM
KEY FEATURES
•
OUTSIDE DIAMETER: 3.480 INCHES MINIMUM AND 3.544 INCHES MAXIMUM IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
ELONGATION PERCENTAGE: 331 MAXIMUM
•
TEMP RATING: -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
•
CENTER HOLE DIAMETER: 3.219 INCHES MINIMUM AND 3.249 INCHES MAXIMUM IN
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FREQUENTLY ASKED QUESTIONS
What is MS21569 CLASS 1?
MS21569 CLASS 1 is a O-RING.
What parts can replace MS21569 CLASS 1?
There are 26 known substitutes for MS21569 CLASS 1: 1525-6, 019-00001-419, A113966 and 23 more. Substitute compatibility should be verified for your specific system.
Is MS21569 CLASS 1 still available?
MS21569 CLASS 1 is currently cancelled.
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