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263TAG ✓ 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, case_style: SQUARE, seal_width: 0.438 INCHES NOMINAL IN, housing_bore_diameter: 1.624 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 5330-00-179-0966, 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
263TAG
NSN: 5330-00-179-0966
FSC: 5330
CAGE: 65177 — PATTERSON PUMP CO DIV PATTERSON PUMP COMPANY (USA)
SPECIFICATIONS
materialLEATHER SEALING ELEMENT
case_styleSQUARE
seal_width0.438 INCHES NOMINAL IN
housing_bore_diameter1.624 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter1.062 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN5330-00-179-0966
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 263TAG 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: 0.438 INCHES NOMINAL IN
•
MATERIAL: STEEL CASE
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
ACCOMMODATED SHAFT DIAMETER: 1.062 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: ANGULAR
•
CASE STYLE: SQUARE
•
HOUSING BORE DIAMETER: 1.624 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SEAL WIDTH0.438 INCHES NOMINAL IN
MATERIALSTEEL CASE
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
MATERIALLEATHER SEALING ELEMENT
ACCOMMODATED SHAFT DIAMETER1.062 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR
CASE STYLESQUARE
HOUSING BORE DIAMETER1.624 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
A-A-59585Interchangeable
interchangeable cross-reference
interchangeable
SKF6318JInterchangeable
interchangeable cross-reference
interchangeable
416821-53-DEInterchangeable
interchangeable cross-reference
interchangeable
1318Interchangeable
interchangeable cross-reference
interchangeable
T1314Interchangeable
interchangeable cross-reference
interchangeable
1752TInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 263TAG?
263TAG is a SEAL,PLAIN ENCASED.
What parts can replace 263TAG?
There are 31 known substitutes for 263TAG: A-A-59585, SKF6318J, 416821-53-DE and 28 more. Substitute compatibility should be verified for your specific system.
Is 263TAG still available?
263TAG 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