PartsTable
Technical Data Sheet
PartsTable / O-RING / 8268-366Y
8268-366Y ✓ 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 O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, center_hole_diameter: 8.500 INCHES NOMINAL IN, cross-sectional_height: 0.125 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-558-9154, 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
8268-366Y
NSN: 5331-00-558-9154
FSC: 5331 — O-RING
CAGE: 07322 — MINNESOTA RUBBER CO (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
center_hole_diameter8.500 INCHES NOMINAL IN
cross-sectional_height0.125 INCHES NOMINAL IN
NSN5331-00-558-9154
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 8268-366Y 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
•
CROSS-SECTIONAL HEIGHT: 0.125 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 8.500 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.125 INCHES NOMINAL IN
CENTER HOLE DIAMETER8.500 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
20E043PC32Interchangeable
interchangeable cross-reference
interchangeable
20C050PC19Interchangeable
interchangeable cross-reference
interchangeable
20A012Interchangeable
interchangeable cross-reference
interchangeable
006466V043Interchangeable
interchangeable cross-reference
interchangeable
N9451Interchangeable
interchangeable cross-reference
interchangeable
A43Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8268-366Y?
8268-366Y is a O-RING.
What parts can replace 8268-366Y?
There are 22 known substitutes for 8268-366Y: 20E043PC32, 20C050PC19, 20A012 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 8268-366Y?
8268-366Y is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-558-9154. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026