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Technical Data Sheet
PartsTable / COMPONENT / DE-B-3126B
DE-B-3126B ✓ 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,CAP,RUBBER is a the manufacturer industrial component. Key specifications include end_item_identification: USED ON MALS EQUIPMENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-448-2951, 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
DE-B-3126B
NSN: 5330-00-448-2951
FSC: 5330
CAGE: 08125 — U S DEPT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION (USA)
SPECIFICATIONS
end_item_identificationUSED ON MALS EQUIPMENT
NSN5330-00-448-2951
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: DE-B-3126B 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
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONUSED ON MALS EQUIPMENT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
533517-4Interchangeable
interchangeable cross-reference
interchangeable
T349004404Interchangeable
interchangeable cross-reference
interchangeable
128C893H01Interchangeable
interchangeable cross-reference
interchangeable
46104Interchangeable
interchangeable cross-reference
interchangeable
XM-36465-41-1500-O-LInterchangeable
interchangeable cross-reference
interchangeable
046104Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is DE-B-3126B?
DE-B-3126B is a SEAL,CAP,RUBBER.
What parts can replace DE-B-3126B?
There are 10 known substitutes for DE-B-3126B: 533517-4, T349004404, 128C893H01 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DE-B-3126B?
DE-B-3126B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-448-2951. 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