Mechanical Seal

May 11, 2006
The QBQLZ contacting-face mechanical seal provides highreliability with low emissions.

The seals are for use with light hydrocarbons of specific gravities between 0.40 and 0.60, such as ethane, ethylene, propane, propylene, and butane — liquids that have a tendency to flash from liquid to vapor at ambient pressure and temperature conditions. The seal features Precision Face Topography where smooth, lowamplitude patented wave patterns are laser-machined onto the seal face, creating a stable hydrodynamic effect. The seals operate in light hydrocarbon services with lower vaporpressure margins — between 5 and 50 psi. Operating range includes pressures from 0 to 750 psi, temperatures between 40 and 400°F, speeds between 20 and 75 fps, and sizes between 1.750 and 5.125 in.

Flowserve Corp., 5215 N. O'Connor Blvd., Suite 2300, Irving, TX 75039, (972) 443-6800, flowserve.com

Sponsored Recommendations

June 27, 2025
Ensure workplace safety and compliance with our comprehensive Lockout/Tagout (LOTO) Safety Training course. Learn critical procedures to prevent serious injuries.
June 27, 2025
Join our expert webinar to discover essential safety control measures and best practices for engineering a truly safe and compliant industrial environment.
June 25, 2025
An innovative aircraft with electric drives combines the best of both worlds. The cross between drone and helicopter could mean significantly faster and more efficient air emergency...
June 25, 2025
Effective when other materials fail, ceramics are particularly suitable for applications requiring wear and chemical resistance, sliding characteristics or biocompatibility. Discover...

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!