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Wall Penetration Sleeves / Disks

GPT offers an extensive line of hole-forming products including sleeves, wall collar products and hole forming disks.


Century Line

Molded HDPE lightweight sleeve with unique hollow waterstop.

GPT Cell Cast Hole Forming Disks

Lightweight option to form large holes in poured concrete.

Steel Wall Sleeves for Pipe Penetration

Painted and Galvanized Steel pipe sleeves for all pipes passing through structures.

Intermediate Sleeve

For installations where the application has an oversized annulus and requires two belts of LINK-SEAL®.

Split Sleeve

For installations where an existing pipe run needs to penetrate a wall yet to be constructed.