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Technical Data Sheet
PartsTable / O-RING / A6689.902.303CP
A6689.902.303CP ✓ 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 A6689.902.303CP is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-063-7109, 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
A6689.902.303CP
NSN: 5331-01-063-7109
FSC: 5331 — O-RING
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
Part NumberA6689.902.303CP
NSN5331-01-063-7109
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A6689.902.303CP 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
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
MATERIAL: RUBBER
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
TECHNICAL CHARACTERISTICS (FLIS)
CRITICALITY CODE JUSTIFICATIONZZZY
MATERIALRUBBER
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
A6689.902.144Interchangeable
interchangeable cross-reference
interchangeable
A6689-902-144 3 -4INInterchangeable
interchangeable cross-reference
interchangeable
C12637PC35Interchangeable
interchangeable cross-reference
interchangeable
BT55X694JXLInterchangeable
interchangeable cross-reference
interchangeable
800030Interchangeable
interchangeable cross-reference
interchangeable
8PSF694J429Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A6689.902.303CP?
A6689.902.303CP is a A6689.902.303CP.
What parts can replace A6689.902.303CP?
There are 26 known substitutes for A6689.902.303CP: A6689.902.144, A6689-902-144 3 -4IN, C12637PC35 and 23 more. Substitute compatibility should be verified for your specific system.
Is A6689.902.303CP still available?
A6689.902.303CP 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