F Seal Rubber 300 - M700734

F Seal Rubber 300 — Mimaki JV300 / CJV300 / UCJV300 / JV330 — M700734

The F Seal Rubber 300 (part no. M700734) is a rubber seal used in the ink supply system of Mimaki large-format printers. It seals the connections between the various components of the ink system (tubes, connectors, dampers) to prevent leaks and air ingress.

This flexible rubber O-ring is resistant to eco-solvent, solvent and UV inks. Its elasticity ensures a permanent seal even under pressure variations in the ink supply system. A worn or hardened seal compromises the system’s integrity and causes ink supply faults.

A genuine Mimaki part, this seal replaces the previous part number M702140 (discontinued) and fits in the same location without modification.

Technical specifications

• OEM part number: M700734
• Replaced part number: M702140 (discontinued)
• Type: Rubber seal (F Seal Rubber)
• Material: Ink-resistant rubber
• Position: Ink supply circuit
• Resistance: Eco-solvent, solvent and UV inks
• Origin: Mimaki OEM part
• Installation: Direct replacement for part no. M702140

Compatibility and use

• Mimaki JV150-130 / JV150-160
• Mimaki JV300-130 / JV300-160
• Mimaki CJV150-75 / CJV150-107 / CJV150-130 / CJV150-160
• Mimaki CJV300-130 / CJV300-160
• Mimaki UCJV150 / UCJV300
• Mimaki JV330-160 / CJV330-160
• Mimaki CJV100
• Mimaki TS330-1600 / TS300P-1800
• Mimaki UJF-3042 MkII

Function

• Seals the connections in the ink supply circuit
• Prevents ink leaks at connection points
• Prevents air ingress into the ink supply system
• Maintains stable ink pressure in the system
• Resistant to the chemical action of eco-solvent, solvent and UV inks

Possible symptoms of wear

• Ink leaks at the supply circuit connections
• Air ingress causing ink shortages during printing
• Persistent air bubbles in the circuit despite purging
• Hardened, cracked or deformed seal visible on inspection
• Loss of pressure in the ink supply system

Replacing the F Seal Rubber 300 restores the ink circuit’s seal and prevents leaks and air ingress, ensuring a reliable ink supply to the print heads.

♻️ DG Spare Parts — European specialist in spare parts for large-format printers.