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Technical Data Sheet
PartsTable / COMPONENT / 104139
104139 ✓ 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,HELICAL is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON, teeth_type: SINGLE HELIX, teeth_quantity: 10, special_features: BLACK, style_designator: STANDARD, end_item_identification: 3990-01-444-6174 BITUM DISTRIBUTOR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-120-7315, 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
104139
NSN: 5340-01-120-7315
FSC: 5340
CAGE: 54786 — BAE SYSTEMS LAND & ARMAMENTS L.P. (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON
teeth_typeSINGLE HELIX
teeth_quantity10
special_featuresBLACK
style_designatorSTANDARD
end_item_identification3990-01-444-6174 BITUM DISTRIBUTOR
hole_accommodation_diameter0.500 INCHES NOMINAL IN
material_accommodated_thickness0.125 INCHES MAXIMUM IN
NSN5340-01-120-7315
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 104139 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
•
MATERIAL ACCOMMODATED THICKNESS: 0.125 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYAMIDE NYLON
•
HOLE ACCOMMODATION DIAMETER: 0.500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STANDARD
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL ACCOMMODATED THICKNESS0.125 INCHES MAXIMUM IN
END ITEM IDENTIFICATION3990-01-444-6174 BITUM DISTRIBUTOR
MATERIALPLASTIC POLYAMIDE NYLON
HOLE ACCOMMODATION DIAMETER0.500 INCHES NOMINAL IN
SPECIAL FEATURESBLACK
STYLE DESIGNATORSTANDARD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
309620Upgraded Successor
successor cross-reference
successor
309664Upgraded Successor
successor cross-reference
successor
BF309620Upgraded Successor
successor cross-reference
successor
2643Interchangeable
interchangeable cross-reference
interchangeable
2-541Interchangeable
interchangeable cross-reference
interchangeable
6674Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 104139?
104139 is a GEAR,HELICAL.
What parts can replace 104139?
There are 22 known substitutes for 104139: 309620, 309664, BF309620 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 104139?
104139 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-120-7315. 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