Sealtite is actually available in all trade sizes from 1/2" to 4". It is used in areas where dampness and moisture is present. It is similar to "greenfield" only is has a continuous rubber coating on the outside. It requires some very spendy connectors when you start dealing with 3" and 4" 90 degree. Those who have bought and used will know.Hope this helps.
Be careful when you buy it. If it is for outdoor use, it needs to be UV rated. Believe me, there is "nonUV" rated sealtite out there for in door use, and some times supply houses will send what they have on the shelf without asking you what type you need.
