DESTU Seal No5 DS5

are designed specifically for the heat Trace range of heating cables and are used as part of the DESTU termination system.
There are 5 seals for the DESTU each seal is specific to a range of cables.
See below:

Heating Cables applicable to DS5

Self-Regulating:

FreezStop Regular FSR-CT and FSR-CF
FreezStop Extra FSE-CT and FSE-CF
FreezStop Extra wide FSEw-CT and FSEw-CF
FailSafe Super FSS-CF
FreezStop Low Voltage wide FLVw-CT and FLVw-CF
FailSafe Ultimo FSU-NF
FailSafe Ultimo wide FSUw-NF
G-Trace GT
Snomelt SM-B

Constant Wattage: