Profile: Perma Tech, Inc. is a manufacturer of loading dock equipments. Our products include seals, shelters, traffic doors, dock bumpers and truck restraints. Our brand includes Perma Pit™. Our F flap head member dock seal is designed to accommodate higher dock door openings. We offer a full range of industrial fabrics, engineered & tested for abrasion resistance, tear resistance, weathering and flexibility. Our perma glide traffic door is ideal for narrow openings across a range of applications.