Metal bellow type mechanical seal
1604
John Crane
The 1604 high performance cartridge seal is designed for difficult applications where high temperature products are being handled that tend to carbonise when coming into contact with atmosphere. It is also stationary mounted a feature that allows the seal to additionally handle high speeds, thermal growth and shaft to seal chamber misalignment. The cartridge incorporates a steam flow guide that directs steam along the bore of the bellows past the face and out to drain. This feature is very effective in cleaning any carbonised hydrocarbons from the bore of the seal and around the running faces in addition to cooling/ warming the process fluid making it easier to seal. In the standard cartridge this steam and any leakage is contained by a segmented carbon close clearance throttle bush. For more toxic or flammable / explosive products the High Temperature Emission Containment Seal can be substituted for greater safety. Non standard options are double ply bellows for greater pressure capability and bellows strength. Replacement of the high temperature packing with O rings when more suitable for a particular application. The seal and seat are interchangeable allowing the cartridge to be converted from stationary to rotating bellows if considered to be necessary.
