Pressure balanced metal bellows with a graphite seal to the shaft.
NUTECH D1 ASSEMBLY SEAL
Features and Benefits
Bellows rotate with the shaft using centrifugal force to throw dirt and particles away from the bellows convolutions.
Designed to handle extreme temperatures.
No shaft freting due to static secondary seal design.
Effective 360° contact is maintained on sealing faces despite minor shaft movement and runout.
Vibration dampening design helps control excessive vibration.
Operating Specifications
Temperature limit:
-350C° F to 800° F ( -212° C to 454° C)
Pressure limit to: 20.4 kPa/300 psi
(elevated pressure outside bellows)
6.8 kPa/100 psi
(elevated pressure inside bellows)
Shaft speeds to: 5000 rpm
Standard Material Construction
Metal Components: Bellows ~ AM 350, End Fittings 316 SS
Retainer ~ Carpenter 42/Invar #36
Hubs ~ 316L ss
Screws ~ 316 ss
Secondary Seal
Grafoil*
Face
Thermo Carbon or Tungsten Carbide
(other materials available upon request)
*Trademark of Union Carbide Corporation
