Bearing protection seal
83
John Crane
Normally supplied as a complete seal cartridge, unique inner and outer segments are specifically designed to prevent oil migration and minimise wear.
Nitrogen is normally injected between the two segmented bushings effectively creating a pressure barrier between the bearing and DGS cavity.
Advanced materials and design ensure minimal wear and promote long life. Unlike many contacting separation seals the Type 83 is designed to operate on cryogenically dry nitrogen.
Design Features
# Low separation 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 selfadjusting hydropads.
# Specially designed segments minimize the separation gas consumption
# Vibration levels to API617
