Dual graphite lip seals can be run without the water supply kit. Minimun free length of shaft needed for installation is 7".
Installation tech tip: Be carefull when sliding the new shaft seal on to the end of the shaft, it is easy to damage the graphite o-rings. If you find the seal binding on the shaft try inserting a socket that is slightly larger than the cardboard tube included with the new seal, that will help enlarge the o-rings. Let it sit for a couple of hours with the socket in place then try and slide it on the shaft. Make sure to use the protective sleeve on the end of the shaft that is included with the shaft seal.