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PartsTable / COMPONENT / F4857
F4857 ✓ 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: RUBBER SYNTHETIC SEALING ELEMENT, case_style: SQUARE, seal_width: 0.469 INCHES NOMINAL IN, housing_bore_diameter: 3.999 INCHES NOMINAL IN, sealing_element_style: VERTICAL, accommodated_shaft_diameter: 3.000 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-413-6019, 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
F4857
NSN: 5330-00-413-6019
FSC: 5330
CAGE: 21416 — HARSCO CORP FAIRMONT RAILWAY MOTORS DIV (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEALING ELEMENT
case_styleSQUARE
seal_width0.469 INCHES NOMINAL IN
housing_bore_diameter3.999 INCHES NOMINAL IN
sealing_element_styleVERTICAL
accommodated_shaft_diameter3.000 INCHES NOMINAL IN
NSN5330-00-413-6019
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: F4857 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: 0.469 INCHES NOMINAL IN
•
CASE STYLE: SQUARE
•
HOUSING BORE DIAMETER: 3.999 INCHES NOMINAL IN
•
MATERIAL: STEEL CASE
•
ACCOMMODATED SHAFT DIAMETER: 3.000 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: VERTICAL
TECHNICAL CHARACTERISTICS (FLIS)
SEAL WIDTH0.469 INCHES NOMINAL IN
CASE STYLESQUARE
HOUSING BORE DIAMETER3.999 INCHES NOMINAL IN
MATERIALSTEEL CASE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
ACCOMMODATED SHAFT DIAMETER3.000 INCHES NOMINAL IN
SEALING ELEMENT STYLEVERTICAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
45984Interchangeable
interchangeable cross-reference
interchangeable
60986Interchangeable
interchangeable cross-reference
interchangeable
429213Interchangeable
interchangeable cross-reference
interchangeable
6705255 KIT 429213Interchangeable
interchangeable cross-reference
interchangeable
F-8491Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is F4857?
F4857 is a SEAL,PLAIN ENCASED.
What parts can replace F4857?
There are 5 known substitutes for F4857: 45984, 60986, 429213 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for F4857?
F4857 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-413-6019. 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