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MM54 ✓ 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 OVERALL, end_style: SPRING END,SQUARED AND GROUND BOTH ENDS, load_rating: 30.000 POUNDS NOMINAL LBS, inside_diameter: 0.590 INCHES NOMINAL IN, style_designator: CYLINDRICAL, surface_treatment: CADMIUM OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-199-5959, 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
MM54
NSN: 5330-00-199-5959
FSC: 5330
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
load_rating30.000 POUNDS NOMINAL LBS
coil_quantity9
inside_diameter0.590 INCHES NOMINAL IN
style_designatorCYLINDRICAL
surface_treatmentCADMIUM OVERALL
spring_free_length2.688 INCHES NOMINAL IN
spring_solid_length0.813 INCHES NOMINAL IN
coil_helix_directionLEFT-HAND
spring_length_under_load1.468 INCHES NOMINAL IN
spring_free_outside_diameter0.750 INCHES NOMINAL IN
NSN5330-00-199-5959
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MM54 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
•
OUTSIDE DIAMETER: 1.094 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR METAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: CIRCULAR
•
APERTURE DIAMETER: 0.781 INCHES NOMINAL IN
•
CROSS-SECTIONAL THICKNESS: 0.031 INCHES NOMINAL IN
•
MATERIAL: COPPER OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESMATERIAL COLD ROLLED,SOFT ANNEALED
OUTSIDE DIAMETER1.094 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR METAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORCIRCULAR
APERTURE DIAMETER0.781 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.031 INCHES NOMINAL IN
MATERIALCOPPER OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
601452Interchangeable
interchangeable cross-reference
interchangeable
22171Interchangeable
interchangeable cross-reference
interchangeable
400279Interchangeable
interchangeable cross-reference
interchangeable
D50668 ITEM 25Interchangeable
interchangeable cross-reference
interchangeable
D50668 ITEM 25CPInterchangeable
interchangeable cross-reference
interchangeable
D19911MBLCPInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MM54?
MM54 is a GASKET.
What parts can replace MM54?
There are 7 known substitutes for MM54: 601452, 22171, 400279 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MM54?
MM54 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-199-5959. 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