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Technical Data Sheet
PartsTable / O-RING / C4406-1
C4406-1 ✓ 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 FLUOROSILICONE CLASS FQ, center_hole_diameter: 3.159 INCHES MINIMUM AND 3.221 INCHES MAXIMUM IN, elongation_percentage: 125 MAXIMUM, cross-sectional_height: 0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM 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 5331-00-211-8040, 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
C4406-1
NSN: 5331-00-211-8040
FSC: 5331 — O-RING
CAGE: 81755 — LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN AERONAUTICS COMPANY (USA)
SPECIFICATIONS
materialRUBBER FLUOROSILICONE CLASS FQ
center_hole_diameter3.159 INCHES MINIMUM AND 3.221 INCHES MAXIMUM IN
elongation_percentage125 MAXIMUM
cross-sectional_height0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
NSN5331-00-211-8040
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: C4406-1 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
•
MATERIAL: RUBBER FLUOROSILICONE CLASS FQ
•
CROSS-SECTIONAL HEIGHT: 0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 3.159 INCHES MINIMUM AND 3.221 INCHES MAXIMUM IN
•
ELONGATION PERCENTAGE: 125 MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER FLUOROSILICONE CLASS FQ
CROSS-SECTIONAL HEIGHT0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
CENTER HOLE DIAMETER3.159 INCHES MINIMUM AND 3.221 INCHES MAXIMUM IN
ELONGATION PERCENTAGE125 MAXIMUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
5219Interchangeable
interchangeable cross-reference
interchangeable
7832028001Interchangeable
interchangeable cross-reference
interchangeable
487739Interchangeable
interchangeable cross-reference
interchangeable
MIL-R-25988BInterchangeable
interchangeable cross-reference
interchangeable
MFF18T220941BInterchangeable
interchangeable cross-reference
interchangeable
99-4601-501Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C4406-1?
C4406-1 is a O-RING.
What parts can replace C4406-1?
There are 22 known substitutes for C4406-1: 5219, 7832028001, 487739 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C4406-1?
C4406-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-211-8040. 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