This video shows how to replace the original flat gasket on my Pulsar NX-14 (same as NX-11) with a generic O-Ring. This is required to ensure the watch is still waterproof. The orginal gasket had stretched over time and was no longer fit for purpose. Give the age of the watch the spare gasket is no longer available as an original spare so this is showing how it can be replaced with a generic Oring, these are often used as high pressure seals. The resulting change I made wore the watch for a month before taking it on holiday where I was swimming ,diving in etc with it every day. The watch seal is still good enough for these activities which is all I need it to do. Result the watch has a new lease of life.