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PartsTable / COMPONENT / C-4401
C-4401 ✓ 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 GEAR,WORM is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL, pitch_diameter: 7.750 INCHES NOMINAL IN, outside_diameter: 5.500 INCHES NOMINAL IN, special_features: RECESS DIAMETER 7.469 INCH, 2EEAD IN, style_designator: CIRCULAR, aperture_diameter: 3.688 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-372-3015, 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
C-4401
NSN: 5330-01-372-3015
FSC: 5330
CAGE: 9U500 — KLINGER RICHARD INC (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
pitch_diameter7.750 INCHES NOMINAL IN
outside_diameter5.500 INCHES NOMINAL IN
special_featuresRECESS DIAMETER 7.469 INCH, 2EEAD IN
style_designatorCIRCULAR
aperture_diameter3.688 INCHES NOMINAL IN
end_item_identificationWINCH,HAND OPERATED
nominal_outside_diameter8.120 INCHES IN
cross-sectional_thickness0.125 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationKLINGER SIL-C-400 MFR REF SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyGEAR,WORM
NSN5330-01-372-3015
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: C-4401 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
C-4401Interchangeable
interchangeable cross-reference
interchangeable
C40456 ITEM 14Interchangeable
interchangeable cross-reference
interchangeable
1052-D213-28Interchangeable
interchangeable cross-reference
interchangeable
A10777A-0514Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C-4401?
C-4401 is a GEAR,WORM.
What parts can replace C-4401?
There are 4 known substitutes for C-4401: C-4401, C40456 ITEM 14, 1052-D213-28 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C-4401?
C-4401 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-372-3015. 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