PolyTek weatherstripping is made from polypropylene extrusions. They are primarily used to block air infiltration. The 582 AB model is mainly used for wooden windows. The adhesive backing allows for easy installation. In some cases, it is also used for entry doors.

Tek-Lon foam weatherstripping, developed by Servitek, is designed for exterior doors and garages. Made of open-cell polyurethane foam encased in polyethylene, they provide excellent thermal and acoustic insulation. These products are known for their flexibility, durability (up to 25 years), resistance to UV rays, rot, and mold, as well as their low thermal conductivity (0.042 W/m-K). Versatile, they are suitable for various materials and applications. Their thermoplastic elastomer anchoring ensures stability and easy replacement. A limited 10-year residential warranty is included. The end caps are custom-cut to meet client specifications.