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Technical Data Sheet
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263-12 ✓ Verified by PartsTable
Clementoni · 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 CAP,FILLER OPENING is a Clementoni industrial component. Key specifications include material: STEEL OVERALL, bore_diameter: 1.4062 INCHES NOMINAL IN, overall_width: 0.8125 INCHES NOMINAL IN, style_designator: NON-LOADING GROOVE, NON-SEPARABLE, overall_outside_diameter: 3.1562 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-580-2786, 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
263-12
NSN: 5330-00-580-2786
FSC: 5330
CAGE: 16004 — DAVEY COMPRESSOR CO DIV OF KECO INDUSTRIES INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter1.4062 INCHES NOMINAL IN
overall_width0.8125 INCHES NOMINAL IN
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
overall_outside_diameter3.1562 INCHES NOMINAL IN
NSN5330-00-580-2786
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 263-12 MFR: Clementoni ⚠ 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
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
OUTSIDE CORNER RADIUS: 0.250 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 3.250 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 2
•
CROSS-SECTIONAL THICKNESS: 0.016 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.281 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
MATERIAL: CELLULOSE OVERALL
•
STYLE DESIGNATOR: NON-CIRCULAR
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OUTSIDE CORNER RADIUS0.250 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER3.250 INCHES NOMINAL IN
BOLT HOLE QUANTITY2
CROSS-SECTIONAL THICKNESS0.016 INCHES NOMINAL IN
HOLE DIAMETER0.281 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
MATERIALCELLULOSE OVERALL
STYLE DESIGNATORNON-CIRCULAR
OVERALL WIDTH3.750 INCHES NOMINAL IN
SIDE RADIUS FROM GASKET CENTER1.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
263-12Interchangeable
interchangeable cross-reference
interchangeable
24429Interchangeable
interchangeable cross-reference
interchangeable
26312-1Interchangeable
interchangeable cross-reference
interchangeable
AP26312Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 263-12?
263-12 is a CAP,FILLER OPENING manufactured by Clementoni.
What parts can replace 263-12?
There are 4 known substitutes for 263-12: 263-12, 24429, 26312-1 and 1 more. Substitute compatibility should be verified for your specific system.
Is 263-12 still available?
263-12 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