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644447 — PUMPZUNITZCENTRIFUG

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

644447: PUMPZUNITZCENTRIFUG.

The PUMPZUNITZCENTRIFUG is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-STYRENE CLASS SBR OVERALL, hole_diameter: 0.156 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 2.000 INCHES MINIMUM AND 2.016 INCHES MAXIMUM IN, overall_length: 2.000 INCHES MINIMUM AND 2.016 INCHES MAXIMUM IN, hardness_rating: 40.0 SHORE DUROMETER A MINIMUM AND 50.0 SHORE DUROMETER A MAXIMUM OVERALL, style_designator: NON-CIRCULAR. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-007-0243, 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
644447
NSN: 5330-00-007-0243
NIINs: 000070243, 015031002
FSC: 5330 — Packing and Gasket Materials
CAGE: 82340 — L3HARRIS TECHNOLOGIES, INC. DIV SPACE AND AIRBORNE SYSTEMS (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-STYRENE CLASS SBR OVERALL
hole_diameter0.156 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width2.000 INCHES MINIMUM AND 2.016 INCHES MAXIMUM IN
overall_length2.000 INCHES MINIMUM AND 2.016 INCHES MAXIMUM IN
hardness_rating40.0 SHORE DUROMETER A MINIMUM AND 50.0 SHORE DUROMETER A MAXIMUM OVERALL
style_designatorNON-CIRCULAR
aperture_diameter1.875 INCHES MINIMUM AND 1.891 INCHES MAXIMUM IN
bolt_hole_quantity4
cross-sectional_thickness0.060 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-R-900 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
outside_corner_bevel_length_along_width0.062 INCHES NOMINAL IN
NSN5330-00-007-0243
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 644447 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
•
CROSS-SECTIONAL THICKNESS: 0.060 INCHES NOMINAL IN
•
HARDNESS RATING: 40.0 SHORE DUROMETER A MINIMUM AND 50.0 SHORE DUROMETER A MAXIMUM OVERALL
•
STYLE DESIGNATOR: NON-CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-900 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
APERTURE DIAMETER: 1.875 INCHES MINIMUM AND 1.891 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.060 INCHES NOMINAL IN
HARDNESS RATING40.0 SHORE DUROMETER A MINIMUM AND 50.0 SHORE DUROMETER A MAXIMUM OVERALL
STYLE DESIGNATORNON-CIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-900 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH2.000 INCHES MINIMUM AND 2.016 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OVERALL WIDTH2.000 INCHES MINIMUM AND 2.016 INCHES MAXIMUM IN
APERTURE DIAMETER1.875 INCHES MINIMUM AND 1.891 INCHES MAXIMUM IN
OUTSIDE CORNER BEVEL LENGTH ALONG WIDTH0.062 INCHES NOMINAL IN
OUTSIDE CORNER BEVEL LENGTH ALONG LENGTH0.062 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 644447?
644447 is a PUMPZUNITZCENTRIFUG.
What is the NSN for 644447?
644447 is cataloged in the U.S. Government catalog under NSN 5330-00-007-0243. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.