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Technical Data Sheet
PartsTable / COMPONENT / A52420-11
A52420-11 ✓ 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 PLUG,EXPANSION is a the manufacturer industrial component. Key specifications include radius: 2.125 INCHES NOMINAL IN, material: STEEL, outside_diameter: 1.500 INCHES NOMINAL IN, style_designator: CONCAVE, surface_treatment: CADMIUM, material_thickness: 0.083 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-276-5853, 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
A52420-11
NSN: 5340-00-276-5853
FSC: 5340
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
radius2.125 INCHES NOMINAL IN
materialSTEEL
outside_diameter1.500 INCHES NOMINAL IN
style_designatorCONCAVE
surface_treatmentCADMIUM
material_thickness0.083 INCHES NOMINAL IN
NSN5340-00-276-5853
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A52420-11 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
•
STYLE DESIGNATOR: CONCAVE
•
SURFACE TREATMENT: CADMIUM
•
OUTSIDE DIAMETER: 1.500 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
RADIUS: 2.125 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.083 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORCONCAVE
SURFACE TREATMENTCADMIUM
OUTSIDE DIAMETER1.500 INCHES NOMINAL IN
MATERIALSTEEL
RADIUS2.125 INCHES NOMINAL IN
MATERIAL THICKNESS0.083 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
8049Interchangeable
interchangeable cross-reference
interchangeable
A-A-52420-15Interchangeable
interchangeable cross-reference
interchangeable
140089Interchangeable
interchangeable cross-reference
interchangeable
WPP1677Interchangeable
interchangeable cross-reference
interchangeable
S703Interchangeable
interchangeable cross-reference
interchangeable
172531Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A52420-11?
A52420-11 is a PLUG,EXPANSION.
What parts can replace A52420-11?
There are 32 known substitutes for A52420-11: 8049, A-A-52420-15, 140089 and 29 more. Substitute compatibility should be verified for your specific system.
Is A52420-11 still available?
A52420-11 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026