Two Single balanced pusher seals arranged in series configuration. Typically used as a safety seal or to meet today’s stringent emissions control standards. As with the single PTO, different type of shaft packing are available and interchangeable. For fluids with a specific gravity less than heptane, custom designed faces (PTO-E version) can be used.

Type of seal: Tandem, pusher design,

series configuration

Pressure: To 600 psig (4140 kPa)

Temperature: To 250F (121C)

Velocity: To 4500 fpm (23 mps)

Standard sizes: ¾” to  4½”

14 mm to 145 mm