Sold as a five pack.
TA-14 : 14" x 1/2" 6mil PTFE Adhesive for FS-358FTA-18 : 18" x 1/2" 6mil PTFE Adhesive for FS-458FTA-26 : 26" x 1/2" 6mil PTFE Adhesive for FS-658F
We recommend replacing the bottom PTFE adhesive strip (1/2" wide sticky backed-remove the liner) every time the element is replaced. Place the PTFE adhesive strip under the element on the base of sealer.