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Technical Data Sheet
PartsTable / O-RING / A6689.902.366CP
A6689.902.366CP ✓ 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 A6689.902.366CP is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-546-8211, 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
A6689.902.366CP
NSN: 5331-01-546-8211
FSC: 5331 — O-RING
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
Part NumberA6689.902.366CP
NSN5331-01-546-8211
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A6689.902.366CP 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 DOCUMENT AND CLASSIFICATION: MIL-R-83248 TYPE 1,CLASS 2 MIL SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
•
CENTER HOLE DIAMETER: 0.234 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-83248 TYPE 1,CLASS 2 MIL SPEC SINGLE MATERIAL RESPONSE
MATERIALRUBBER FLUOROCARBON CLASS FPM
CENTER HOLE DIAMETER0.234 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
CRITICALITY CODE JUSTIFICATIONZZZY
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
END ITEM IDENTIFICATION3/4 INCH RELIEF VALVE IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
A6689.902.366Interchangeable
interchangeable cross-reference
interchangeable
3-902-V709-90Interchangeable
interchangeable cross-reference
interchangeable
20235 FIND 32Interchangeable
interchangeable cross-reference
interchangeable
LL-HX5-4665Interchangeable
interchangeable cross-reference
interchangeable
20368PC30Interchangeable
interchangeable cross-reference
interchangeable
M83248/1-902Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A6689.902.366CP?
A6689.902.366CP is a A6689.902.366CP.
What parts can replace A6689.902.366CP?
There are 8 known substitutes for A6689.902.366CP: A6689.902.366, 3-902-V709-90, 20235 FIND 32 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A6689.902.366CP?
A6689.902.366CP is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-546-8211. 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