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Technical Data Sheet
PartsTable / MRO / 3408-4-7
3408-4-7 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The KEYTOP TELETYPEWRITER 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 5330-00-735-1671, 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
MRO→ MRO_GENERAL→ 3408-4-7
NSN: 5330-00-735-1671
FSC: 5330
CAGE: 01212 — FEDERAL-MOGUL CORP GOVERNMENT SALES DEPT (USA)
SPECIFICATIONS
Part Number3408-4-7
NSN5330-00-735-1671
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3408-4-7 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
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 1000 FEET PER MINUTE FT
•
HOUSING BORE DIAMETER: 0.749 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: ANGULAR
•
SEAL WIDTH: 0.125 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT DIAMETER: 0.500 INCHES NOMINAL IN
•
MATERIAL: LEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
TECHNICAL CHARACTERISTICS (FLIS)
CASE STYLESQUARE
ACCOMMODATED SHAFT MAXIMUM RATED SPEED1000 FEET PER MINUTE FT
HOUSING BORE DIAMETER0.749 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR
SEAL WIDTH0.125 INCHES NOMINAL IN
ACCOMMODATED SHAFT DIAMETER0.500 INCHES NOMINAL IN
MATERIALLEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
A-A-624Interchangeable
interchangeable cross-reference
interchangeable
C54233Interchangeable
interchangeable cross-reference
interchangeable
GGG-T-70Interchangeable
interchangeable cross-reference
interchangeable
340847Interchangeable
interchangeable cross-reference
interchangeable
80994-4-7Interchangeable
interchangeable cross-reference
interchangeable
3D0013-4-7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3408-4-7?
3408-4-7 is a KEYTOP TELETYPEWRITER. It is classified as a MRO (MRO_GENERAL).
What parts can replace 3408-4-7?
There are 10 known substitutes for 3408-4-7: A-A-624, C54233, GGG-T-70 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3408-4-7?
3408-4-7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-735-1671. 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