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394434 ✓ 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 VALVE,POPPET,ENGINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 3140 STEM, head_style: MUSHROOM, stem_style: DOUBLE GROOVED, head_height: 0.1562 INCHES NOMINAL IN, neck_radius: 0.3125 INCHES NOMINAL IN, stem_length: 4.6730 INCHES NOMINAL 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 5330-00-056-5645, 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
394434
NSN: 5330-00-056-5645
FSC: 5330
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL COMP 3140 STEM
head_styleMUSHROOM
stem_styleDOUBLE GROOVED
head_height0.1562 INCHES NOMINAL IN
neck_radius0.3125 INCHES NOMINAL IN
stem_length4.6730 INCHES NOMINAL IN
stem_diameter0.3100 INCHES NOMINAL IN
chamfer_length0.0469 INCHES NOMINAL IN
outside_diameter1.2500 INCHES NOMINAL IN
unable_to_decodeUNABLE TO DECODE
seat_angle_in_deg45.0
first_groove_width0.2650 INCHES NOMINAL IN
NSN5330-00-056-5645
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 394434 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 THICKNESS: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 4500 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: COPPER ALLOY 110 OVERALL
•
SURFACE TREATMENT: CADMIUM OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR METAL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL THICKNESS0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4500 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY 110 OVERALL
SURFACE TREATMENTCADMIUM OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR METAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
3H6682-33Interchangeable
interchangeable cross-reference
interchangeable
23923Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 394434?
394434 is a VALVE,POPPET,ENGINE.
What parts can replace 394434?
There are 2 known substitutes for 394434: 3H6682-33, 23923. Substitute compatibility should be verified for your specific system.
What is the NSN for 394434?
394434 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-056-5645. 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