Mechanical Seals

Style 57

Single Spring Cartridge Seal

The Single Spring serves to keep the sealing faces in contact and positively transmits the drive evenly 360º around the full circumference of the rotary face. This is accomplished by specially designed ends of the spring, which provide an interference fit. Then as the shaft rotates the spring ends further increase their grip. This compression spring is wound either right or left hand depending on shaft rotation.

• Heavy Duty / non-clogging design – no small springs to break or clog
• Simple installation
• Fits ANSI Standard & Big Bore pumps
• Economical to repair
• Unbalanced Design ideal for low pressure applications like waste water
• Can be converted to a welded metal bellows cartridge -
  Style 50
• Available in inch and metric sizes

Materials Available

• Faces available: Carbon, Nickel bound Tungsten Carbide, Silicon Carbide and Bronze
• Metal Parts: 316SS with Monel and Hastelloy C276 options
• Various choices of elastomers to meet required application

Operating Conditions

Max Temp - 400ºF (204ºC)
Max Pressure - 150 PSI (10 bar)
Max Speed - 4500 FPM (22 m/sec)