Conversion to gas lubrication extends MBTF from a few months to over 3 years

A Czechia-based pharmaceutical company was running a stainless-steel mixer vessel fitted with a John Crane T7700 90mm seal. Operating parameters are 80rpm, 130°C at 3 barg Client challenge: The liquid-lubricated seal was regularly failing within a few months. Repairs were carried out in-house but the frequesnt failures continued. The client needed to find a better […]

Dynamic Testing of Gas Seal Gives Pharmaceutical Manufacturer Added Reassurance

A pharmaceutical company based in Ireland had several Goulds STX pumps fitted with John Crane T2800E/0349 pressurised double gas lubricated mechanical seal cartridges. The pumps operate at 2900 rpm and the product temperature is ambient. Barrier gas is nitrogen. Client challenge: The company was looking for a more responsive service and higher quality seal repairs […]