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Technical Data Sheet
PartsTable / O-RING / A-4563
A-4563 ✓ 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

PARTS KIT,LINEAR ACTUATING CYLIN. Key specifications include end_item_identification: HYDRAULIC CYLINDER NUMBER NG10031, supply_items_and_quantities: O-RINGS - 4;BACKUP RINGS - 4. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-641-0231, 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
A-4563
NSN: 5331-00-641-0231
FSC: 5331 — O-RING
CAGE: 32142 — HYDRASEARCH COMPANY, LLC (USA)
SPECIFICATIONS
component_quantity8
end_item_identificationHYDRAULIC CYLINDER NUMBER NG10031
supply_items_and_quantitiesO-RINGS - 4;BACKUP RINGS - 4
NSN5331-00-641-0231
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A-4563 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: 1.367 INCHES MINIMUM AND 1.407 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
•
CENTER HOLE DIAMETER: 1.103 INCHES MINIMUM AND 1.115 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER1.367 INCHES MINIMUM AND 1.407 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONNSN 2320-01-304-2277 PLS (PALLETIZED LOADING SYSTEM)
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CENTER HOLE DIAMETER1.103 INCHES MINIMUM AND 1.115 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
237-6016Interchangeable
interchangeable cross-reference
interchangeable
105X16LInterchangeable
interchangeable cross-reference
interchangeable
028-04353Interchangeable
interchangeable cross-reference
interchangeable
1000-011PC21Interchangeable
interchangeable cross-reference
interchangeable
DS947032CPIECE3Interchangeable
interchangeable cross-reference
interchangeable
Q21EInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A-4563?
A-4563 is a PARTS KIT,LINEAR ACTUATING CYLIN.
What parts can replace A-4563?
There are 30 known substitutes for A-4563: 237-6016, 105X16L, 028-04353 and 27 more. Substitute compatibility should be verified for your specific system.
Is A-4563 still available?
A-4563 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