As the name suggests, the seal rings of this rotary union remain closed with or without coolant pressure.
• Single-passage version for cooling lubricant or MQL
• Dry-running cycles and compressed air applications possible during rotation, depending on the model
• Closed sealing surfaces
• Full-media flow
• Bearings protected by labyrinth seal and leakage holes
• Highly wear-resistant, pressure-balanced seal combination consisting of silicon carbide for a long service life, even under challenging operating conditions
• Speeds of up to 24,000 rpm possible
• Versions with a maximum pressure of 150 bar
• Bore-mounted or rotor-mounted versions for easy installation
• Axial and/or radial connections available