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Technical Data Sheet
644-414 ✓ 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 SEAL RING,METAL is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, ring_style: EXPANDING CONCENTRIC, joint_style: STEP JOINT, overall_width: 0.1850 INCHES MINIMUM AND 0.1860 INCHES MAXIMUM IN, outside_diameter: 4.500 INCHES NOMINAL IN, fsc_application_data: PUMP,CENTRIFUGAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-851-7965, 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
644-414
NSN: 5330-00-851-7965
FSC: 5330
CAGE: 27235 — HARDIE-TYNES CO., INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
ring_styleEXPANDING CONCENTRIC
joint_styleSTEP JOINT
overall_width0.1850 INCHES MINIMUM AND 0.1860 INCHES MAXIMUM IN
outside_diameter4.500 INCHES NOMINAL IN
fsc_application_dataPUMP,CENTRIFUGAL
radial_wall_thickness0.1790 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
cross-sectional_shape_stylePLAIN RECTANGULAR, TWO PIECE, STRAIGHT FACE
NSN5330-00-851-7965
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 644-414 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
RING STYLE: EXPANDING CONCENTRIC
RADIAL WALL THICKNESS: 0.1790 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLE: PLAIN RECTANGULAR, TWO PIECE, STRAIGHT FACE
OUTSIDE DIAMETER: 4.500 INCHES NOMINAL IN
MATERIAL: COPPER ALLOY OVERALL
FSC APPLICATION DATA: PUMP,CENTRIFUGAL
JOINT STYLE: STEP JOINT
TECHNICAL CHARACTERISTICS (FLIS)
RING STYLEEXPANDING CONCENTRIC
OVERALL WIDTH0.1850 INCHES MINIMUM AND 0.1860 INCHES MAXIMUM IN
RADIAL WALL THICKNESS0.1790 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLEPLAIN RECTANGULAR, TWO PIECE, STRAIGHT FACE
OUTSIDE DIAMETER4.500 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
FSC APPLICATION DATAPUMP,CENTRIFUGAL
JOINT STYLESTEP JOINT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
VARIABLE PRICINGInterchangeable
interchangeable cross-reference
interchangeable
42-715Interchangeable
interchangeable cross-reference
interchangeable
AF251Interchangeable
interchangeable cross-reference
interchangeable
SA-258Interchangeable
interchangeable cross-reference
interchangeable
AR-104Interchangeable
interchangeable cross-reference
interchangeable
7079Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 644-414?
644-414 is a SEAL RING,METAL.
What parts can replace 644-414?
There are 7 known substitutes for 644-414: VARIABLE PRICING, 42-715, AF251 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 644-414?
644-414 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-851-7965. This indicates validated use in U.S. government and defense supply chains.
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