Wall Penetration Sleeves / Disks
GPT offers an extensive line of hole-forming products including sleeves, wall collar products and hole forming disks.
Century-Line™ Pipe Penetration Sleeves
Molded HDPE lightweight sleeve with unique hollow waterstop.
Cell-Cast™ Interlocking Hole Forming Disks
Lightweight option to form large holes in poured concrete.
Steel Wall Sleeves
Painted and Galvanized Steel pipe sleeves for all pipes passing through structures.
Intermediate Sleeves
For installations where the application has an oversized annulus and requires two belts of LINK-SEAL®.