Dynatect Thermiseal sealed bellows are made from polyurethane film bonded together by a thermic weld process. When additional strength is required, coated nylon-reinforced material can be used. Thermiseal covers are lightweight and completely sealed. Thermiseal covers are available as boots or way covers, in any size or shape (e.g. round, oval, rectangular, strip-type, way cover). Most shapes are available without tooling. Profiles of a unique shape might require a nominal tooling fee.