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Technical Data Sheet
PartsTable / COMPONENT / TDA.EPD.DG.125
TDA.EPD.DG.125 ✓ 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 TDA.EPD.DG.125 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-444-2780, 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
TDA.EPD.DG.125
NSN: 5340-01-444-2780
FSC: 5340
CAGE: 32101 — LEIDOS, INC. (USA)
SPECIFICATIONS
Part NumberTDA.EPD.DG.125
NSN5340-01-444-2780
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: TDA.EPD.DG.125 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
•
SPECIAL MARKINGS: 32101-201018
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL MARKINGS32101-201018
OVERALL HEIGHT0.260 INCHES NOMINAL IN
OVERALL WIDTH0.780 INCHES NOMINAL IN
END ITEM IDENTIFICATIONPDR-1 DOSIMETER
OVERALL LENGTH2.320 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
201018Interchangeable
interchangeable cross-reference
interchangeable
5027T40P02Interchangeable
interchangeable cross-reference
interchangeable
201.18Interchangeable
interchangeable cross-reference
interchangeable
201.018Interchangeable
interchangeable cross-reference
interchangeable
900879Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TDA.EPD.DG.125?
TDA.EPD.DG.125 is a TDA.EPD.DG.125.
What parts can replace TDA.EPD.DG.125?
There are 5 known substitutes for TDA.EPD.DG.125: 201018, 5027T40P02, 201.18 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for TDA.EPD.DG.125?
TDA.EPD.DG.125 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-444-2780. 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