Type 83
Manufacturer: John Crane
Separation Seal (Contacting Technology)
The Type 83 is a dual segmented carbon bushing assembly designed to prevent the migration of bearing oil to the dry gas seal cartridge. Normally applied as a double arrangement with an inert buffer gas. When used in conjunction with the Type 28 dry running gas seal, it provides a total sealing system that ensures separation of bearing oil and process gas in compressors.
• Low buffer gas consumption.
• Low wear for longer life and improved reliability.
• Cartridge design for easy installation.
• Universal design independent of shaft rotation.
• Unique carbon bushing segment design with self adjusting hydropads.
• Incorporates biased flow path to further reduce the risk of bearing oil migration.
• Specially designed joint between the carbon bushing segments to minimize buffer consumption and bearing oil migration.
• Unique axial spring design accommodates shaft excursions.
• Low wear for longer life and improved reliability.
• Cartridge design for easy installation.
• Universal design independent of shaft rotation.
• Unique carbon bushing segment design with self adjusting hydropads.
• Incorporates biased flow path to further reduce the risk of bearing oil migration.
• Specially designed joint between the carbon bushing segments to minimize buffer consumption and bearing oil migration.
• Unique axial spring design accommodates shaft excursions.
TEMPERATURE LIMITS20°F to 400°F/ 30°C to 200°C
PRESSURE LIMITS3 to 15 psi(g)/0.2 to 1.0 bar(g)
SPEED LIMITS430fps/130m/s
SIZE LIMITS40mm to 375mm, with sleeve to fit all metric or imperial shafts