Water-swellable sealing tape.
WATERSTOP TPE 205 is a swellable joint sealing tape based on swellable modified elastomer material. In contact with water it develops volume by swelling up to 468%. As a result it seals and waterproofs the joint gaps permanently.
WATERSTOP TPE 205 is used in underground constructions for sealing and waterproofing horizontal or vertical construction joints in concrete.