product name : John Crane Mechanical Seal
1.Main Characteristics of this o ring mechanical seal
Temperature: -30°c~200°c
Pressure : ≤2.5Mpa
Speed : ≤25m/Sec
Materials
Rotary Ring :Carbon/ SIC / TC
Stationary Ring : SIC / TC
Secondary Seal : NBR / Viton / EPDM
Spring & Other parts:stainless steel SS304 / SS316
Mediums:Petroleum products,chemical solvents low and middle corrosion acids and other similar liqiuds.
This is the design drawing:
The John Crane Mechanical 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.
