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Technical Data Sheet
PartsTable / COMPONENT / 43559/57783
43559/57783 ✓ 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 43559/57783 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 5330-01-299-4907, 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
43559/57783
NSN: 5330-01-299-4907
FSC: 5330
CAGE: F9758 — SLCE WATERMAKERS (FRA)
SPECIFICATIONS
Part Number43559/57783
NSN5330-01-299-4907
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 43559/57783 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
290594PC4Interchangeable
interchangeable cross-reference
interchangeable
43559Interchangeable
interchangeable cross-reference
interchangeable
X8945-1Interchangeable
interchangeable cross-reference
interchangeable
SMD422571Interchangeable
interchangeable cross-reference
interchangeable
34-43214Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 43559/57783?
43559/57783 is a 43559/57783.
What parts can replace 43559/57783?
There are 5 known substitutes for 43559/57783: 290594PC4, 43559, X8945-1 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 43559/57783?
43559/57783 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-299-4907. 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