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MS9141-12 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The GASKET is a the manufacturer industrial component. Key specifications include material: STEEL COMP 321 OVERALL, outside_diameter: 0.562 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN, style_designator: CIRCULAR, aperture_diameter: 0.486 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN, cross-sectional_thickness: 0.034 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN, cross-sectional_shape_style: HOLLOW. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-009-7221, 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
MS9141-12
NSN: 5330-01-009-7221
FSC: 5330
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 321 OVERALL
outside_diameter0.562 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN
style_designatorCIRCULAR
aperture_diameter0.486 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN
cross-sectional_thickness0.034 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN
cross-sectional_shape_styleHOLLOW
material_document_and_classificationAMS 5570 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5576 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-009-7221
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS9141-12 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
STYLE DESIGNATOR: CIRCULAR
•
CROSS-SECTIONAL THICKNESS: 0.034 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: HOLLOW
•
APERTURE DIAMETER: 0.486 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5570 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5576 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.562 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 321 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORCIRCULAR
CROSS-SECTIONAL THICKNESS0.034 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLEHOLLOW
APERTURE DIAMETER0.486 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5570 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5576 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.562 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN
MATERIALSTEEL COMP 321 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
SAE-AS9141Interchangeable
interchangeable cross-reference
interchangeable
MS9141-05Interchangeable
interchangeable cross-reference
interchangeable
5330PL0815804Interchangeable
interchangeable cross-reference
interchangeable
MS9141-06Interchangeable
interchangeable cross-reference
interchangeable
MS9141-25Interchangeable
interchangeable cross-reference
interchangeable
MS9141-025Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS9141-12?
MS9141-12 is a GASKET.
What parts can replace MS9141-12?
There are 7 known substitutes for MS9141-12: SAE-AS9141, MS9141-05, 5330PL0815804 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS9141-12?
MS9141-12 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-009-7221. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026