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Technical Data Sheet
63669 ✓ 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

DIAPHRAGM,ACTUATOR VALVE,SPECIAL. Key specifications include material: STEEL CORROSION RESISTING, pressure_rating: 600.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS, end_item_identification: P/N U301391201, NSN 4820-01-370-5443. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-251-9354, 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
63669
NSN: 5330-00-251-9354
FSC: 5330
CAGE: 0AHP5 — CURTISS-WRIGHT CONTROLS, INC. DIV ACTUATION DIVISION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
pressure_rating600.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
end_item_identificationP/N U301391201, NSN 4820-01-370-5443
NSN5330-00-251-9354
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 63669 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 SHAPE STYLE: O-RING
CENTER HOLE DIAMETER: 0.820 INCHES NOMINAL IN
HARDNESS RATING: 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: AMS-7274 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
FSC APPLICATION DATA: ENGINE,RECIPROCATING,AIRCRAFT
CROSS-SECTIONAL HEIGHT: 0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLEO-RING
CENTER HOLE DIAMETER0.820 INCHES NOMINAL IN
HARDNESS RATING65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS-7274 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
FSC APPLICATION DATAENGINE,RECIPROCATING,AIRCRAFT
CROSS-SECTIONAL HEIGHT0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
63669Interchangeable
interchangeable cross-reference
interchangeable
25654NInterchangeable
interchangeable cross-reference
interchangeable
N69529Interchangeable
interchangeable cross-reference
interchangeable
301391201Interchangeable
interchangeable cross-reference
interchangeable
2810H21-011Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 63669?
63669 is a DIAPHRAGM,ACTUATOR VALVE,SPECIAL.
What parts can replace 63669?
There are 5 known substitutes for 63669: 63669, 25654N, N69529 and 2 more. Substitute compatibility should be verified for your specific system.
Is 63669 still available?
63669 is currently cancelled.
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