Hollow Bar in PEEK 152.4 mm beige

PEEK is the plastic you reach for when nothing else holds. The material runs continuously at 260 degrees and takes 300 degrees for short periods, more heat than any other standard material in our range can handle. PEEK is shorthand for a high performance plastic for the toughest environments, and the name is earned.

PEEK is semi-crystalline, which means it does not soften in one single step the way ordinary plastics do. It has a glass transition at 150 degrees and holds its shape all the way up to its melting point at 341 degrees. The dimensions stand still even in hot steam and damp surroundings, since the material takes up hardly any water. Down to -40 degrees it works as well without turning brittle.

PEEK burns slowly entirely without flame retardant additives and meets fire class V-0 already in thin sections. The oxygen content in the air has to rise to 35 percent before the material burns at all. At the same time it takes hot water, bases, superheated steam and radiation, and that is the reason PEEK sits in autoclaves, in semiconductor plants and in nuclear technology.

Despite the heat resistance, PEEK can be machined in an ordinary workshop, which most materials in the same class cannot. It also insulates electrically all the way up in temperature. One thing to carry with you: do not count on mechanical load close to 260 degrees, that figure applies to unloaded material, and PEEK does not take concentrated sulfuric acid.

This version is a hollow bar in beige PEEK with a 152.4 mm outside diameter. Hollow bars are tube blanks with a ready hole in the middle, made for turning out bushings, rings and sleeves without first boring out a solid rod, which saves both material and time on heavy parts. The heavy dimension suits when you have to take out parts with a large inside diameter.