Partager : Cylinder Safe Retainer Since May 2020, Plastimo incorporates a Cylinder Safe Retainer (CSR) in the production of all their inflatable lifejackets*. Lifejackets currently in use will be upgraded to include the CSR when they are sent for servicing to the Plastimo factory or to a Plastimo approved station.(*UML inflation heads, models MK2, MK5, M2, M3 and ProSensor) Add to Wishlist Models Ref. For inflatable lifejackets with UML firing head 68939 24 g and 33 g bottle (25 units in bag) 68940 38 g and 60 g bottle (25 units in bag) All products in the range