Sauger rubber seal, material: rubber, size: DN40. The package contains 2 pcs. The outer dimension of the seal is 44mm, the inner dimension is 36mm and the seal is 3mm thick. The rubber seals are primarily intended for warm domestic water temperatures, i.e. approx. +60-65C. For a moment, the seal can withstand +100 degrees. A better option for pressure lines is a mass seal.