John Crane Canada
Type 8620
|
Features
• Silicon carbide mating ring for high face stability and efficient heat dissipation
• Cranite primary ring for face stability and resistance to abrasion
• Optional ACR (Armoured Composite Ring) for high strength in reverse pressure operation
• LaserFace for increased fluid film stiffness and reduced heat generation under high loads
• ESR (Elastomer Support Ring) isolates seal faces from component induced distortions and minimise friction
• Stationary springs are unaffected by centrifugal forces for high speed operation
• Polymer Support Rings for excellent process compatibility and prevention of hang-up
• Multi-point injection for effective cooling and minimises asymmetric face distortions
Recommended applications
• Process Pumps
• Driven Machinery
• Other Rotating Equipment
The seal is suited to a whole host of offshore, refinery and process industry duties. Its robust construction and proven heritage make it ideal for remote pipeline installations.
Parameters
STANDARD MATERIALS
Seal faces
Cranite vs. SiC/WC
-50 to 300 °C
Carbon vs. SiC
-50 to 250 °C
O-rings/secondary seals
Fluorocarbon
-25 to 200 °C (Hydrocarbon)
PRESSURE LIMITS
Vacuum to 200 bar(g)
SPEED LIMITS
50m/s
SIZE RANGE
41mm to 206mm
