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Technical Data Sheet
458-50018-7 ✓ 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 housing_bore_diameter: 6.000 INCHES NOMINAL IN, accommodated_shaft_diameter: 4.995 INCHES MINIMUM AND 5.005 INCHES MAXIMUM 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 5330-01-146-2156, 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
458-50018-7
NSN: 5330-01-146-2156
FSC: 5330
CAGE: 82918 — THE BOEING COMPANY DIV LEGACY WICHITA (USA)
SPECIFICATIONS
housing_bore_diameter6.000 INCHES NOMINAL IN
accommodated_shaft_diameter4.995 INCHES MINIMUM AND 5.005 INCHES MAXIMUM IN
NSN5330-01-146-2156
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 458-50018-7 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
ACCOMMODATED SHAFT DIAMETER: 4.995 INCHES MINIMUM AND 5.005 INCHES MAXIMUM IN
HOUSING BORE DIAMETER: 6.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT DIAMETER4.995 INCHES MINIMUM AND 5.005 INCHES MAXIMUM IN
HOUSING BORE DIAMETER6.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
ST7M258-500Interchangeable
interchangeable cross-reference
interchangeable
600-500Interchangeable
interchangeable cross-reference
interchangeable
PTB864-500-250Interchangeable
interchangeable cross-reference
interchangeable
4-60500Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 458-50018-7?
458-50018-7 is a SEAL,PLAIN.
What parts can replace 458-50018-7?
There are 4 known substitutes for 458-50018-7: ST7M258-500, 600-500, PTB864-500-250 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 458-50018-7?
458-50018-7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-146-2156. This indicates validated use in U.S. government and defense supply chains.
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