TUBED is a playable word

tube Scrabble® Dictionary

verb
tubed, tubing, tubes
to provide with a tube (a long, hollow cylinder)
23 Playable Words can be made from "TUBED"
   2-Letter Words (6 found)
   3-Letter Words (10 found)
   4-Letter Words (5 found)
   5-Letter Words (2 found)