The DTZK25-K-M2.5 is a part manufactured by Encitech, a company that specializes in the production of bellows and bellow assemblies for various industrial applications. This particular part is a self-closing tube set, which consists of two tubes: an outer covering, and an internal tube. The outer tube is made from stainless steel and is capable of withstanding up to 25 bar pressure. It is also corrosion-resistant. The inner tube consists of a 2.5mm wall thickness is designed to provide a tight seal, while the bellows are designed to both absorb vibration and allow for relative motion between the two tubes. Additionally, this part is designed to provide an excellent vacuum or gas seal in extreme environments, making it ideal for applications in the aerospace, medical, and industrial industries.