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Technical Data Sheet
349271 ✓ 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,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: STEEL CASE, case_style: SQUARE, seal_width: 0.187 INCHES NOMINAL IN, outside_diameter: 1.379 INCHES NOMINAL IN, surface_treatment: PLASTIC CASE, housing_bore_diameter: 1.375 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-078-6478, 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
349271
NSN: 5330-00-078-6478
FSC: 5330
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialSTEEL CASE
case_styleSQUARE
seal_width0.187 INCHES NOMINAL IN
outside_diameter1.379 INCHES NOMINAL IN
surface_treatmentPLASTIC CASE
housing_bore_diameter1.375 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter1.000 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN5330-00-078-6478
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 349271 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
HOUSING BORE DIAMETER: 1.375 INCHES NOMINAL IN
SEALING ELEMENT STYLE: ANGULAR
SEAL WIDTH: 0.187 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
CASE STYLE: SQUARE
MATERIAL: RUBBER SYNTHETIC SEALING ELEMENT
OUTSIDE DIAMETER: 1.379 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HOUSING BORE DIAMETER1.375 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR
SEAL WIDTH0.187 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
CASE STYLESQUARE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
MATERIALSTEEL CASE
OUTSIDE DIAMETER1.379 INCHES NOMINAL IN
SURFACE TREATMENTPLASTIC CASE
ACCOMMODATED SHAFT DIAMETER1.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
9820Interchangeable
interchangeable cross-reference
interchangeable
712334Interchangeable
interchangeable cross-reference
interchangeable
357453SInterchangeable
interchangeable cross-reference
interchangeable
40635VInterchangeable
interchangeable cross-reference
interchangeable
M520Interchangeable
interchangeable cross-reference
interchangeable
5187Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 349271?
349271 is a SEAL,PLAIN ENCASED.
What parts can replace 349271?
There are 12 known substitutes for 349271: 9820, 712334, 357453S and 9 more. Substitute compatibility should be verified for your specific system.
Is 349271 still available?
349271 is currently cancelled.
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