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PartsTable / COMPONENT / 056421 ITEM 15
056421 ITEM 15 ✓ 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 GASKET is a the manufacturer industrial component. Key specifications include aperture_width: 5.000 INCHES NOMINAL IN, gage_thickness: 0.019 INCHES NOMINAL IN, aperture_length: 9.375 INCHES NOMINAL IN, bearing_surface_width: 0.375 INCHES NOMINAL IN, center_to_center_distance: 0.125 INCHES NOMINAL IN, cross-sectional_thickness: 0.062 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 5330-01-163-2498, 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
056421 ITEM 15
NSN: 5330-01-163-2498
FSC: 5330
CAGE: 48422 — WILLIAM POWELL COMPANY, THE DBA POWELL VALVE DIV THE STARFLO CORPORATION (USA)
SPECIFICATIONS
aperture_width5.000 INCHES NOMINAL IN
gage_thickness0.019 INCHES NOMINAL IN
aperture_length9.375 INCHES NOMINAL IN
bearing_surface_width0.375 INCHES NOMINAL IN
center_to_center_distance0.125 INCHES NOMINAL IN
cross-sectional_thickness0.062 INCHES NOMINAL IN
NSN5330-01-163-2498
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 056421 ITEM 15 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
•
CROSS-SECTIONAL THICKNESS: 0.062 INCHES NOMINAL IN
•
GAGE THICKNESS: 0.019 INCHES NOMINAL IN
•
APERTURE WIDTH: 5.000 INCHES NOMINAL IN
•
APERTURE LENGTH: 9.375 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE: 0.125 INCHES NOMINAL IN
•
BEARING SURFACE WIDTH: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL THICKNESS0.062 INCHES NOMINAL IN
GAGE THICKNESS0.019 INCHES NOMINAL IN
APERTURE WIDTH5.000 INCHES NOMINAL IN
APERTURE LENGTH9.375 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE0.125 INCHES NOMINAL IN
BEARING SURFACE WIDTH0.375 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
B874-50072Interchangeable
interchangeable cross-reference
interchangeable
105012Interchangeable
interchangeable cross-reference
interchangeable
7720853Interchangeable
interchangeable cross-reference
interchangeable
GE304G6Interchangeable
interchangeable cross-reference
interchangeable
304-28V6CInterchangeable
interchangeable cross-reference
interchangeable
304Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 056421 ITEM 15?
056421 ITEM 15 is a GASKET.
What parts can replace 056421 ITEM 15?
There are 9 known substitutes for 056421 ITEM 15: B874-50072, 105012, 7720853 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 056421 ITEM 15?
056421 ITEM 15 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-163-2498. 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