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Technical Data Sheet
PartsTable / COMPONENT / A256A
A256A ✓ 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 ENCASED is a the manufacturer industrial component. Key specifications include material: LEATHER SEALING ELEMENT A, case_style: SQUARE, seal_width: 0.406 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN, housing_bore_diameter: 1.828 INCHES NOMINAL IN, sealing_element_style: ANGULAR, accommodated_shaft_diameter: 1.062 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-292-1643, 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
A256A
NSN: 5330-00-292-1643
FSC: 5330
CAGE: 93343 — WHITE FARM EQUIPMENT CO SUB OF TIC INVESTMENT CORP
SPECIFICATIONS
materialLEATHER SEALING ELEMENT A
case_styleSQUARE
seal_width0.406 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
housing_bore_diameter1.828 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter1.062 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN5330-00-292-1643
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A256A 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
•
SEAL WIDTH: 0.406 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
•
MATERIAL: RUBBER SYNTHETIC SEALING ELEMENT B
•
CASE STYLE: SQUARE
•
SEALING ELEMENT STYLE: ANGULAR
•
HOUSING BORE DIAMETER: 1.828 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT DIAMETER: 1.062 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
TECHNICAL CHARACTERISTICS (FLIS)
SEAL WIDTH0.406 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
MATERIALRUBBER SYNTHETIC SEALING ELEMENT B
CASE STYLESQUARE
MATERIALLEATHER SEALING ELEMENT A
SEALING ELEMENT STYLEANGULAR
HOUSING BORE DIAMETER1.828 INCHES NOMINAL IN
ACCOMMODATED SHAFT DIAMETER1.062 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
5365PL0942140Interchangeable
interchangeable cross-reference
interchangeable
802219-002Interchangeable
interchangeable cross-reference
interchangeable
2130Interchangeable
interchangeable cross-reference
interchangeable
5137HAInterchangeable
interchangeable cross-reference
interchangeable
X419Interchangeable
interchangeable cross-reference
interchangeable
419Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A256A?
A256A is a SEAL,PLAIN ENCASED.
What parts can replace A256A?
There are 19 known substitutes for A256A: 5365PL0942140, 802219-002, 2130 and 16 more. Substitute compatibility should be verified for your specific system.
Is A256A still available?
A256A 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