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Technical Data Sheet
A6689.904.366CP ✓ 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 A6689.904.366CP 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 5331-01-546-8246, 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
A6689.904.366CP
NSN: 5331-01-546-8246
FSC: 5331 — O-RING
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
Part NumberA6689.904.366CP
NSN5331-01-546-8246
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A6689.904.366CP 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
CROSS-SECTIONAL HEIGHT: 0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
CENTER HOLE DIAMETER: 0.346 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
CRITICALITY CODE JUSTIFICATION: ZZZY
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-83248 TYPE 1,CLASS 2 MIL SPEC SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
CENTER HOLE DIAMETER0.346 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
MATERIALRUBBER FLUOROCARBON CLASS FPM
CRITICALITY CODE JUSTIFICATIONZZZY
END ITEM IDENTIFICATION3/4 INCH RELIEF VALVE IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-83248 TYPE 1,CLASS 2 MIL SPEC SINGLE MATERIAL RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
3-904V709-90Interchangeable
interchangeable cross-reference
interchangeable
LO1317Interchangeable
interchangeable cross-reference
interchangeable
8712 FIND NO.21Interchangeable
Same NIIN cross-reference
interchangeable
8712 FIND NO.21CPInterchangeable
Same NIIN cross-reference
interchangeable
A6689.904.366Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A6689.904.366CP?
A6689.904.366CP is a A6689.904.366CP.
What parts can replace A6689.904.366CP?
There are 5 known substitutes for A6689.904.366CP: 3-904V709-90, LO1317, 8712 FIND NO.21 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A6689.904.366CP?
A6689.904.366CP is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-546-8246. This indicates validated use in U.S. government and defense supply chains.
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