Tesa^® 4600 Xtreme Conditions HD is one of tesa’s premium tapes. It is a strong self-amalgamating silicone tape which seals with itself without adhesive. It is applied with tension by wrapping the tape around itself. tesa^® 4600 Xtreme Conditons HD creates a water tight, permanent sealing. No drying time is required. Its flexible material can be applied smoothly on any kind of surface, including wet or warm, dirty or oily. Xtreme Conditions can even be applied under water.