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RU45 ✓ 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 KEY BLANK is a the manufacturer industrial component. Key specifications include special_features: NICKEL SILVER. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-027-6843, 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
RU45
NSN: 5340-01-027-6843
FSC: 5340
CAGE: 91636 — CURTIS INDUSTRIES INC (USA)
SPECIFICATIONS
special_featuresNICKEL SILVER
NSN5340-01-027-6843
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: RU45 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
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESNICKEL SILVER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
1DInterchangeable
interchangeable cross-reference
interchangeable
SP8553-1Interchangeable
interchangeable cross-reference
interchangeable
11D-2-2Interchangeable
interchangeable cross-reference
interchangeable
204-012-101-3ASAInterchangeable
interchangeable cross-reference
interchangeable
204-012-101-3ASA1-1DInterchangeable
interchangeable cross-reference
interchangeable
1-1DInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RU45?
RU45 is a KEY BLANK.
What parts can replace RU45?
There are 11 known substitutes for RU45: 1D, SP8553-1, 11D-2-2 and 8 more. Substitute compatibility should be verified for your specific system.
Is RU45 still available?
RU45 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026