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PartsTable / COMPONENT / A11543
A11543 ✓ 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 BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include material: OIL LUBRICATING LUBRICATION, corner_shape: SQUARE ALL CORNERS, overall_length: 1.4950 INCHES MINIMUM AND 1.5050 INCHES MAXIMUM IN, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 1.0010 INCHES MINIMUM AND 1.0020 INCHES MAXIMUM IN, body_outside_diameter: 1.1885 INCHES MINIMUM AND 1.1895 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-419-9159, 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
A11543
NSN: 5330-00-419-9159
FSC: 5330
CAGE: 46717 — PETTIBONE LLC (USA)
SPECIFICATIONS
materialOIL LUBRICATING LUBRICATION
corner_shapeSQUARE ALL CORNERS
overall_length1.4950 INCHES MINIMUM AND 1.5050 INCHES MAXIMUM IN
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter1.0010 INCHES MINIMUM AND 1.0020 INCHES MAXIMUM IN
body_outside_diameter1.1885 INCHES MINIMUM AND 1.1895 INCHES MAXIMUM IN
nondefinitive_spec/std_data1 TYPE AND A COMPOSITION
material_document_and_classificationMIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-419-9159
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A11543 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
•
OUTSIDE DIAMETER: 4.000 INCHES NOMINAL IN
•
MATERIAL: UNABLE TO DECODE
•
RING STYLE: CONCENTRIC
•
MATERIAL THICKNESS: 0.285 INCHES NOMINAL IN
•
INSIDE DIAMETER: 3.688 INCHES NOMINAL IN
•
OUTER EDGE THICKNESS: 0.075 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER4.000 INCHES NOMINAL IN
MATERIALUNABLE TO DECODE
RING STYLECONCENTRIC
MATERIAL THICKNESS0.285 INCHES NOMINAL IN
INSIDE DIAMETER3.688 INCHES NOMINAL IN
OUTER EDGE THICKNESS0.075 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
A1154-3Interchangeable
interchangeable cross-reference
interchangeable
AA1154-3Interchangeable
interchangeable cross-reference
interchangeable
MILB5687TYPE1C0MP0SITI0NAInterchangeable
interchangeable cross-reference
interchangeable
WM-3-8Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A11543?
A11543 is a BEARING,SLEEVE.
What parts can replace A11543?
There are 4 known substitutes for A11543: A1154-3, AA1154-3, MILB5687TYPE1C0MP0SITI0NA and 1 more. Substitute compatibility should be verified for your specific system.
Is A11543 still available?
A11543 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