Manufacturer: John Crane
Multi purpose Non pusher Elastomer Bellows Seal
The Type 2 mechanical seal is available in single, double and balanced arrangements. An outside mounted spring results in a compact working height that enables it to fit very short stuffing boxes.
• To absorb both breakout and running torque, the seal is designed with a drive band and drive notches that eliminate overstressing of bellows. Slippage is eliminated, protecting the shaft and sleeve from wear and scoring.
• Automatic adjustment compensates for abnormal shaft end play and run out, primary ring wear and equipment tolerances. Axial and radial shaft movement is compensated for with uniform spring pressure.
• Special balancing allows for higher pressure applications, greater operating speeds and lower wear.
• Non clogging, single coil spring allows for greater dependability than multiple spring designs, and it will not run foul due to fluid contact.
TEMPERATURE LIMITS40°F to 400°F/ 40°C to 205°C (depending on materials used)
PRESSURE LIMITS-Type 2: 420 psi(g)/29 bar(g) - -Type 2B: 1200 psi(g)/83 bar(g) -
SPEED LIMITSConsult specification sheet speed chart.