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Technical Data Sheet
PartsTable / COMPONENT / 7B7218
7B7218 ✓ 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 CLAMP,SYNCHRO is a the manufacturer industrial component. Key specifications include width: 1.705 INCHES NOMINAL IN, height: 0.735 INCHES NOMINAL IN, length: 1.945 INCHES NOMINAL IN, material: STEEL, hole_diameter: 0.675 INCHES NOMINAL IN, furnished_items: LOCKNUT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-371-3758, 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
7B7218
NSN: 5340-00-371-3758
FSC: 5340
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
width1.705 INCHES NOMINAL IN
height0.735 INCHES NOMINAL IN
length1.945 INCHES NOMINAL IN
materialSTEEL
hole_diameter0.675 INCHES NOMINAL IN
furnished_itemsLOCKNUT
surface_treatmentCADMIUM
NSN5340-00-371-3758
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7B7218 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
•
HOLE DIAMETER: 0.675 INCHES NOMINAL IN
•
WIDTH: 1.705 INCHES NOMINAL IN
•
FURNISHED ITEMS: LOCKNUT
•
SURFACE TREATMENT: CADMIUM
•
MATERIAL: STEEL
•
LENGTH: 1.945 INCHES NOMINAL IN
•
HEIGHT: 0.735 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HOLE DIAMETER0.675 INCHES NOMINAL IN
WIDTH1.705 INCHES NOMINAL IN
FURNISHED ITEMSLOCKNUT
SURFACE TREATMENTCADMIUM
MATERIALSTEEL
LENGTH1.945 INCHES NOMINAL IN
HEIGHT0.735 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
WE-3225Interchangeable
interchangeable cross-reference
interchangeable
315-18026-01Interchangeable
interchangeable cross-reference
interchangeable
18535Interchangeable
interchangeable cross-reference
interchangeable
53S441-FInterchangeable
interchangeable cross-reference
interchangeable
HR10734Interchangeable
interchangeable cross-reference
interchangeable
80202-4016-01Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7B7218?
7B7218 is a CLAMP,SYNCHRO.
What parts can replace 7B7218?
There are 11 known substitutes for 7B7218: WE-3225, 315-18026-01, 18535 and 8 more. Substitute compatibility should be verified for your specific system.
Is 7B7218 still available?
7B7218 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