Guys,
a did hear/read a few years ago that you should never 'seal
wood'. My Magnet & Southern doors are Pine and all I do to them is to
oil them with either Pine oil or the cheaper Mangers Teak oil from B &
Q. To initially clean them I use a medium Wire Wool, a fine Wire Wool
will eventually give you a glass like finish. The wood can still
breathe using oil.

Chris.