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5644LUP — SEAL,PLAIN

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5644LUP: SEAL,PLAIN.

The SEAL,PLAIN is a the manufacturer industrial component. Key specifications include material: RUBBER HEEL, seal_width: 0.500 INCHES NOMINAL IN, construction: SOLID, housing_bore_diameter: 2.375 INCHES NOMINAL IN, accommodated_shaft_diameter: 1.375 INCHES NOMINAL IN, cross-sectional_shape_style: SINGLE LIP. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-260-5895, 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
5644LUP
NSN: 5330-01-260-5895
FSC: 5330 — Packing and Gasket Materials
CAGE: 79130 — NASHUA CORP INDUSTRIAL TAPE DIV (USA)
SPECIFICATIONS
materialRUBBER HEEL
seal_width0.500 INCHES NOMINAL IN
constructionSOLID
housing_bore_diameter2.375 INCHES NOMINAL IN
accommodated_shaft_diameter1.375 INCHES NOMINAL IN
cross-sectional_shape_styleSINGLE LIP
NSN5330-01-260-5895
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5644LUP 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
•
SEAL WIDTH: 0.500 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 2.375 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SINGLE LIP
•
ACCOMMODATED SHAFT DIAMETER: 1.375 INCHES NOMINAL IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
•
CONSTRUCTION: SOLID
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.500 INCHES NOMINAL IN
HOUSING BORE DIAMETER2.375 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESINGLE LIP
ACCOMMODATED SHAFT DIAMETER1.375 INCHES NOMINAL IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
MATERIALRUBBER HEEL
MATERIALSTEEL CORROSION RESISTING SPRING
CONSTRUCTIONSOLID
SUBSTITUTES & CROSS-REFERENCES 3
2D3-1014 ITEM 21Reference document
Same NSN cross-reference
Reference document — Secondary reference
5D3-02390Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AMD-1403 ITEM 33Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5644LUP?
5644LUP is a SEAL,PLAIN.
What parts can replace 5644LUP?
There are 3 known substitutes for 5644LUP: 2D3-1014 ITEM 21, 5D3-02390, AMD-1403 ITEM 33. Substitute compatibility should be verified for your specific system.
What is the NSN for 5644LUP?
5644LUP is cataloged in the U.S. Government catalog under NSN 5330-01-260-5895. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
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.