Schluter Systems has introduced Kerdi-Seal-PS and MV, the newest components of its Schluter Shower System. These prefabricated seals are sections of the Schluter-Kerdi waterproofing membrane with overmolded rubber gaskets. Kerdi-Seal-PS is designed to seal pipe protrusions through the Kerdi waterproofing membrane. Kerdi-Seal-MV protects moisture-sensitive solid backing panels at the mixing valve.