TE sealant tape is a general-purpose adhesive and cable breakout area filler that can accommodate a wide range of applications, materials and environmental conditions.

Low-peel strength for easy repair. Using TE sealant with molded parts provides excellent sealing and helps prevent debris and water from entering the backshell or connector. TE sealant also offers a low-peel strength, making repairs trouble-free. The sealant is available in Halogen-free and flame-retardant versions. 


Raychem general purpose hot melt sealant tape


Raychem halogen-free hot melt sealant tape

Raychem Adhesive Spec Chart


Product Type Product Description Tempature Range
S1278 Hot-melt grey butyl sealant General purpose sealant and cable breakout area filler.  -40°C to 90°C
S1305 Hot-melt grey butyl sealant- Flame Retardant Halogen-free, flame-retardant sealant and cable breakout area filler.  -40°C to 90°C

Sealant Applications

Tubing and Molded Parts
  • Buried cable splice sealing 
  • Top Side shipboard sealing 
  • Moisture protection 
  • Water holdout  


Substrate Preparation

Notes and Caution


  • Avoid contamination of the prepared surface. If using primer, apply it according to the manufacturer's instructions and allow it to dry.
  • Epoxy adhesives may cause skin and eye irritation. Be sure to observe the handling instructions.
  • When using hot melt adhesives on substrates with high heat sink capacity (such as connector backshells), preheat the substrate until it is hot to touch, then apply the adhesive tape and shrink the molded part in place.



The use of cleaning solvent is described in the preparation of various components for adhesive bonding. Please observe the solvent manufacturer’s safety recommendations. Several Raychem epoxy adhesives and solvent base primers are also described in some cases. For specific handling precautions, please consult the appropriate Raychem material safety data sheet for the adhesive being used.


  • Water sealing
  • Weatherproofing


  • To be used with BSTS Tubing or other polyolefin tubing products