F Seal Rubber 300 - M700734

F Seal Rubber 300 – M700734

The F Seal Rubber 300 (M700734) is a rubber sealing ring used in the ink supply circuit of Mimaki large-format printers. It seals the connections between the ink-circuit elements (tubes, connectors, dampers) to prevent leaks and air ingress. This soft rubber O-ring resists eco-solvent, solvent and UV inks; its elasticity keeps a permanent seal even under pressure changes. Genuine Mimaki part, it replaces the discontinued M702140 in the same location.

Technical specifications

• OEM reference: M700734
• Manufacturer: Mimaki
• Part type: Rubber sealing ring (F Seal Rubber 300)
• Replaces: M702140 (discontinued)
• Resistance: Eco-solvent, solvent, UV inks
• Shipping: Shipped ready to install

Compatibility & use

• Mimaki CJV150
• Mimaki CJV300
• Mimaki TS3
• Mimaki TS300P
• Mimaki UCJV150
• Mimaki UCJV300
• Mimaki UJF

Function

• Seals the connections in the ink supply circuit
• Prevents ink leaks at the connections
• Prevents air ingress into the supply circuit
• Keeps a stable ink pressure in the system
• Resists eco-solvent, solvent and UV inks

Signs of wear

• Ink leaks at the supply-circuit connections
• Air ingress causing ink dropouts
• Persistent air bubbles despite purges
• Hardened, cracked or deformed seal
• Pressure loss in the ink supply system

Replacing this part restores the machine to proper working order.

♻️ DG Spare Parts – European specialist in spare parts for large-format printers and plotters.