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Technical Data Sheet
JM4790 ✓ 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 is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC SEALING ELEMENT, seal_width: 0.500 INCHES NOMINAL IN, construction: SOLID, housing_bore_diameter: 4.750 INCHES NOMINAL IN, accommodated_shaft_diameter: 3.250 INCHES NOMINAL IN, cross-sectional_shape_style: SINGLE LIP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-194-7228, 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
JM4790
NSN: 5330-00-194-7228
FSC: 5330
CAGE: 75165 — JOHNS MANVILLE INTL (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEALING ELEMENT
seal_width0.500 INCHES NOMINAL IN
constructionSOLID
housing_bore_diameter4.750 INCHES NOMINAL IN
accommodated_shaft_diameter3.250 INCHES NOMINAL IN
cross-sectional_shape_styleSINGLE LIP
NSN5330-00-194-7228
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: JM4790 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
SEAL WIDTH: 0.500 INCHES NOMINAL IN
MATERIAL: STEEL SPRING
CONSTRUCTION: SOLID
HOUSING BORE DIAMETER: 4.750 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLE: SINGLE LIP
ACCOMMODATED SHAFT DIAMETER: 3.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SEAL WIDTH0.500 INCHES NOMINAL IN
MATERIALSTEEL SPRING
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
CONSTRUCTIONSOLID
HOUSING BORE DIAMETER4.750 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESINGLE LIP
ACCOMMODATED SHAFT DIAMETER3.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
341D341G01Interchangeable
interchangeable cross-reference
interchangeable
338D473G01Interchangeable
interchangeable cross-reference
interchangeable
4790Interchangeable
interchangeable cross-reference
interchangeable
301Interchangeable
interchangeable cross-reference
interchangeable
907-33Interchangeable
interchangeable cross-reference
interchangeable
4217DInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is JM4790?
JM4790 is a SEAL,PLAIN.
What parts can replace JM4790?
There are 9 known substitutes for JM4790: 341D341G01, 338D473G01, 4790 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for JM4790?
JM4790 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-194-7228. This indicates validated use in U.S. government and defense supply chains.
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