Accufab transitional ferrules are available in two sizes.

Both are designed to be used with our 4" or 4.5" clamshell clamps. The first measures 3" where the tubing meets and is welded to the ferrule.  The 3" gradually transitions open to a 4" ferrule for use with a 4" clamp.

The second measures 4" where the tubing meets and is welded to the ferrule and gradually transitions open to a 4.5" ferrule to be used with our 4.5" clamp.

Please note: Smaller diameter is at the weld and will fit against either 3" or 4" tubing.  Also, they are taller than our standard ferrule due to the transition in size.

Accufab's clamps, inner sleeves, weld ferrules and transitional ferrules are CNC machined from the highest quality billet aluminum.