Pop-Off – when rotation without media is possible
Pop-Off® seal rings
The seal rings on this type of rotary union are closed when under pressure. When depressurised, the seal rings separate from each other, thereby creating a small gap (hence the Pop-Off ® name). This eliminates friction and seal wear during use without the
Detailed information
Application examples
DEUBLIN Pop-Off – when rotation without media is possible
Pop-Off ® seal rings: The seal rings on this type of rotary union are closed when under pressure. When depressurised, the seal rings separate from each other, thereby creating a small gap (hence the Pop-Off ® name). This eliminates friction and seal wear during use without the need for cooling lubricant. This allows “dry running” of the rotary unions in the depressurised state for an unlimited period of time, even at high speeds.
• Single-passage version for cooling lubricant or MQL
• Pop-Off ® technology allows unlimited “dry running” without media pressure
• Full-media flow
• Bore-mounted or rotor-mounted versions for easy installation
• Bearings protected by labyrinth seal and leakage holes
• Highly wear-resistant, pressure-balanced seal combination made of silicon carbide for a long service life, even under challenging operating conditions
• Speeds of up to 42,000 rpm possible
• Versions with a maximum pressure of 140 bar
• Axial and/or radial connections available
